Less. Su-25 from end to end(with pitot) is 15m. More like ~3.X m(seems close to KH-29 in size). Which is alright for an air breather. Chunky and chunky, it isn't intercontinental.
It is 15 meters and 36 centimeters for length of Su-25 with pitot and looking again at images, seems to be at most 4 meters.
Could be same 3.85 meter length as Kh-35 series and making airframe rectangular would provide 30% more volume than cylinder.
If it is guided by GNSS and or INS along target recognition relying on optical sensor, no need for bulky radar components in missile.
Thus space needed for the missile control system can be reduced, freed up volume could allow for heavier warhead or larger fuel tank.
If missile has same or comparable warhead to Kh-35 series then expanded and freed up volume can vastly extended potential range.
At bare minimum 500 with up to 1000 kilometers is possible with precise management of engine output to ration fuel consumption.
Also MiG-29 9-13 aka Fatback that North Korea has could also carry it and even heavier up to 1.1 ton for each inner wing pylon.