Q: Is 425,780 a Prime Number?
A: No, 425,780 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 425780 can be evenly divided by 1 2 4 5 10 20 61 122 244 305 349 610 698 1,220 1,396 1,745 3,490 6,980 21,289 42,578 85,156 106,445 212,890 and 425,780, with no remainder.
Since 425,780 cannot be divided by just 1 and 425,780, it is not a prime number.