It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 250 509 138 is not a prime number.
For example, 250 509 138 can be divided by 2: 250 509 138 / 2 = 125 254 569.
For 250 509 138 to be a prime number, it would have been required that 250 509 138 has only two divisors, i.e., itself and 1.
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250 509 138 is an even number, because it is evenly divisible by 2: 250 509 138 / 2 = 125 254 569.
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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 250 509 138 is about 15 827.480.
Thus, the square root of 250 509 138 is not an integer, and therefore 250 509 138 is not a square number.
The square of a number (here 250 509 138) is the result of the product of this number (250 509 138) by itself (i.e., 250 509 138 × 250 509 138); the square of 250 509 138 is sometimes called "raising 250 509 138 to the power 2", or "250 509 138 squared".
The square of 250 509 138 is 62 754 828 221 503 040 because 250 509 138 × 250 509 138 = 250 509 1382 = 62 754 828 221 503 040.
As a consequence, 250 509 138 is the square root of 62 754 828 221 503 040.
250 509 138 is a number with 9 digits.
The multiples of 250 509 138 are all integers evenly divisible by 250 509 138, that is all numbers such that the remainder of the division by 250 509 138 is zero. There are infinitely many multiples of 250 509 138. The smallest multiples of 250 509 138 are: