: Right-click on the first file (ending in .7z.001 ). Select "Extract Here." The software will automatically "stitch" all parts together, including part .025, to recreate the original EPUB files.
: Download a compression utility like 7-Zip (free/open-source) or WinRAR. Epub 7z 025
: If you only have part .025, you cannot open it. The archive will show a "Data Error" or "Unexpected End of Archive." : Right-click on the first file (ending in
A file ending in is not a standalone ebook; it is the 25th "slice" of a larger archive. To access the EPUB files inside, you must have all preceding parts (001 through 024) in the same folder. How to Open and Use Epub 7z 025 Files including part .025