2.5e+16 picometers equals 25 kilometers.
Convert 2.5e+16 picometers into meters, decimeters, centimeters, milimeters, micrometers, nanometers, inches, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...
Convert 25 kilometers into meters, decimeters, centimeters, milimeters, micrometers, nanometers, inches, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...