Q: Is 642,025 a Prime Number?
A: No, 642,025 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 642025 can be evenly divided by 1 5 25 61 305 421 1,525 2,105 10,525 25,681 128,405 and 642,025, with no remainder.
Since 642,025 cannot be divided by just 1 and 642,025, it is not a prime number.