It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 425 434 is not a prime number.
For example, 425 434 can be divided by 2: 425 434 / 2 = 212 717.
For 425 434 to be a prime number, it would have been required that 425 434 has only two divisors, i.e., itself and 1.
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425 434 is an even number, because it is evenly divisible by 2: 425 434 / 2 = 212 717.
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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 425 434 is about 652.253.
Thus, the square root of 425 434 is not an integer, and therefore 425 434 is not a square number.
The square of a number (here 425 434) is the result of the product of this number (425 434) by itself (i.e., 425 434 × 425 434); the square of 425 434 is sometimes called "raising 425 434 to the power 2", or "425 434 squared".
The square of 425 434 is 180 994 088 356 because 425 434 × 425 434 = 425 4342 = 180 994 088 356.
As a consequence, 425 434 is the square root of 180 994 088 356.
The multiples of 425 434 are all integers evenly divisible by 425 434, that is all numbers such that the remainder of the division by 425 434 is zero. There are infinitely many multiples of 425 434. The smallest multiples of 425 434 are: