What widely used on aircraft in the 1930s through 1950s was the result of the development of the M-25?
Shvetsov ASh-82: The Shvetsov ASh-82 (M-82) is a Soviet 14-cylinder, two-row, air-cooled radial aircraft engine developed from the Shvetsov M-62. Shvetsov ASh-82:  The M-62 was the result of development of the M-25, which was a licensed version of the Wright R-1820 Cyclone. Wright R-1820 Cyclone: The Wright R-1820 Cyclone 9 was an American radial engine developed by Curtiss-Wright, widely used on aircraft in the 1930s through 1950s.
Shvetsov ASh-82