425400931 has 2 divisors, whose sum is σ = 425400932. Its totient is φ = 425400930.

The previous prime is 425400929. The next prime is 425400961. The reversal of 425400931 is 139004524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425400931 - 2¹ = 425400929 is a prime.

It is a super-2 number, since 2×425400931² = 361931904191333522, which contains 22 as substring.

Together with 425400929, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 425400931.

It is not a weakly prime, because it can be changed into another prime (425400961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212700465 + 212700466.

It is an arithmetic number, because the mean of its divisors is an integer number (212700466).

Almost surely, 2^425400931 is an apocalyptic number.

425400931 is a deficient number, since it is larger than the sum of its proper divisors (1).

425400931 is an equidigital number, since it uses as much as digits as its factorization.

425400931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 425400931 is about 20625.2498409110. The cubic root of 425400931 is about 752.0836464551.

The spelling of 425400931 in words is "four hundred twenty-five million, four hundred thousand, nine hundred thirty-one".