Q: Is 421,525 a Prime Number?
A: No, 421,525 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 421525 can be evenly divided by 1 5 13 25 65 325 1,297 6,485 16,861 32,425 84,305 and 421,525, with no remainder.
Since 421,525 cannot be divided by just 1 and 421,525, it is not a prime number.