Split file or Compressed file from a multi-volume archive (part 25)
File type: Archive and compressed file
A 025 file extension is related to the split file or compressed file from a multi-volume archive (part 25).
Found 2 different file type records with the same 025 filename suffix.
File type category:
Archive and compressed file
Date updated: July 19, 2025
The 025 file extension is generally associated with split files. A part of larger file split using splitter software, such us HJSplit, WellTek 001 File Joiner & Splitter, SplitJoin or File Managers, such as Total Commander. It is also associated with several archivers or compression tools, which are using, or did use in the past, the 025 file extension for its multi-volume files or archives, such as Winrar (see rar) or 7-Zip (see 025).
In case of split files, you will need to merge them first with the use of the splitting/joining software tool, before you can open or work with them. If the files are compressed multi-volume archives, you will have to extract the first one and it will automatically continue to extract all the parts. In either case, you will need ALL the parts to access the original content.
To open or use the split file, you will need to first joint the file with the original splitting software. In case of multi-volume archive, just put all the parts in same directory and extract the first part.
In order to convert the original split file to something else, you will need to merge it first using the original splitting tool. In case of multi-volume archive, its not possible to convert only one part of it. Only complete archive can be converted in to another archive or compression format. The easiest way how to convert complete multi-volume archive is to decompress the archive with the use of supported archiving or compression tool and repack the content with another compression or archive application of your choice.
Software applications that can open 025 files:
Microsoft Windows
Software apps that create 025 files:
Microsoft Windows
File type category:
Various data file
Date updated: September 23, 2026
Winfunktion Mathematik v8.0 was an older German mathematics program released in 1998. Its .025 files contain data used for mathematical Julia-set fractals.
The current and latest version of Winfunktion Mathematik is version 18. It is not known whether version 18 and other newer versions still use .025 files for Julia-set fractals, so compatibility with those releases is uncertain.
Open the file with Winfunktion Mathematik v8.0 on Microsoft Windows. The file is associated with the Winfunktion Mathematik Plus software.
Because this format is specifically associated with version 8.0, newer versions may not support it. If the file does not open in a later release, use the original version where possible.
Open the file in a compatible version of Winfunktion Mathematik and use any export function provided by that software if a different representation is required. Otherwise, retain the original file in its native format.
Software applications that handle other tasks involving 025 files:
Microsoft Windows
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