Q: Is 216,225 a Prime Number?
A: No, 216,225 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 216225 can be evenly divided by 1 3 5 9 15 25 31 45 75 93 155 225 279 465 775 961 1,395 2,325 2,883 4,805 6,975 8,649 14,415 24,025 43,245 72,075 and 216,225, with no remainder.
Since 216,225 cannot be divided by just 1 and 216,225, it is not a prime number.