It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 125 012 is not a prime number.
For example, 125 012 can be divided by 2: 125 012 / 2 = 62 506.
For 125 012 to be a prime number, it would have been required that 125 012 has only two divisors, i.e., itself and 1.
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125 012 is an even number, because it is evenly divisible by 2: 125 012 / 2 = 62 506.
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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 125 012 is about 353.570.
Thus, the square root of 125 012 is not an integer, and therefore 125 012 is not a square number.
The square of a number (here 125 012) is the result of the product of this number (125 012) by itself (i.e., 125 012 × 125 012); the square of 125 012 is sometimes called "raising 125 012 to the power 2", or "125 012 squared".
The square of 125 012 is 15 628 000 144 because 125 012 × 125 012 = 125 0122 = 15 628 000 144.
As a consequence, 125 012 is the square root of 15 628 000 144.
The multiples of 125 012 are all integers evenly divisible by 125 012, that is all numbers such that the remainder of the division by 125 012 is zero. There are infinitely many multiples of 125 012. The smallest multiples of 125 012 are: