Q: Is 765,625 a Prime Number?
A: No, 765,625 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 765625 can be evenly divided by 1 5 7 25 35 49 125 175 245 625 875 1,225 3,125 4,375 6,125 15,625 21,875 30,625 109,375 153,125 and 765,625, with no remainder.
Since 765,625 cannot be divided by just 1 and 765,625, it is not a prime number.