425164931 has 2 divisors, whose sum is σ = 425164932. Its totient is φ = 425164930.

The previous prime is 425164903. The next prime is 425164967. The reversal of 425164931 is 139461524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425164931 is a prime.

It is a super-2 number, since 2×425164931² = 361530437104469522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 425164891 and 425164900.

It is not a weakly prime, because it can be changed into another prime (425164231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212582465 + 212582466.

It is an arithmetic number, because the mean of its divisors is an integer number (212582466).

Almost surely, 2^425164931 is an apocalyptic number.

425164931 is a deficient number, since it is larger than the sum of its proper divisors (1).

425164931 is an equidigital number, since it uses as much as digits as its factorization.

425164931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 425164931 is about 20619.5279043920. The cubic root of 425164931 is about 751.9445427217.

The spelling of 425164931 in words is "four hundred twenty-five million, one hundred sixty-four thousand, nine hundred thirty-one".