It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 255 267 013 is not a prime number.
For example, 255 267 013 can be divided by 2 069: 255 267 013 / 2069 = 123 377.
For 255 267 013 to be a prime number, it would have been required that 255 267 013 has only two divisors, i.e., itself and 1.
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255 267 013 is an odd number, because it is not evenly divisible by 2.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 255 267 013 is about 15 977.078.
Thus, the square root of 255 267 013 is not an integer, and therefore 255 267 013 is not a square number.
The square of a number (here 255 267 013) is the result of the product of this number (255 267 013) by itself (i.e., 255 267 013 × 255 267 013); the square of 255 267 013 is sometimes called "raising 255 267 013 to the power 2", or "255 267 013 squared".
The square of 255 267 013 is 65 161 247 925 942 168 because 255 267 013 × 255 267 013 = 255 267 0132 = 65 161 247 925 942 168.
As a consequence, 255 267 013 is the square root of 65 161 247 925 942 168.
255 267 013 is a number with 9 digits.
The multiples of 255 267 013 are all integers evenly divisible by 255 267 013, that is all numbers such that the remainder of the division by 255 267 013 is zero. There are infinitely many multiples of 255 267 013. The smallest multiples of 255 267 013 are: