425264509 has 2 divisors, whose sum is σ = 425264510. Its totient is φ = 425264508.

The previous prime is 425264501. The next prime is 425264533. The reversal of 425264509 is 905462524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381108484 + 44156025 = 19522^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 425264509 - 2³ = 425264501 is a prime.

It is a super-2 number, since 2×425264509² = 361699805230022162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425264501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212632254 + 212632255.

It is an arithmetic number, because the mean of its divisors is an integer number (212632255).

Almost surely, 2^425264509 is an apocalyptic number.

It is an amenable number.

425264509 is a deficient number, since it is larger than the sum of its proper divisors (1).

425264509 is an equidigital number, since it uses as much as digits as its factorization.

425264509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 425264509 is about 20621.9424157862. The cubic root of 425264509 is about 752.0032425213.

The spelling of 425264509 in words is "four hundred twenty-five million, two hundred sixty-four thousand, five hundred nine".