It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 255 008 959 is not a prime number.
For example, 255 008 959 can be divided by 17: 255 008 959 / 17 = 15 000 527.
For 255 008 959 to be a prime number, it would have been required that 255 008 959 has only two divisors, i.e., itself and 1.
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255 008 959 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 255 008 959 is about 15 969.000.
Thus, the square root of 255 008 959 is not an integer, and therefore 255 008 959 is not a square number.
The square of a number (here 255 008 959) is the result of the product of this number (255 008 959) by itself (i.e., 255 008 959 × 255 008 959); the square of 255 008 959 is sometimes called "raising 255 008 959 to the power 2", or "255 008 959 squared".
The square of 255 008 959 is 65 029 569 170 263 680 because 255 008 959 × 255 008 959 = 255 008 9592 = 65 029 569 170 263 680.
As a consequence, 255 008 959 is the square root of 65 029 569 170 263 680.
255 008 959 is a number with 9 digits.
The multiples of 255 008 959 are all integers evenly divisible by 255 008 959, that is all numbers such that the remainder of the division by 255 008 959 is zero. There are infinitely many multiples of 255 008 959. The smallest multiples of 255 008 959 are: