Q: Is 642,425 a Prime Number?
A: No, 642,425 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 642425 can be evenly divided by 1 5 7 25 35 175 3,671 18,355 25,697 91,775 128,485 and 642,425, with no remainder.
Since 642,425 cannot be divided by just 1 and 642,425, it is not a prime number.