25056631 has 4 divisors (see below), whose sum is σ = 25135992. Its totient is φ = 24977272.

The previous prime is 25056613. The next prime is 25056653. The reversal of 25056631 is 13665052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25056631 - 2¹⁷ = 24925559 is a prime.

It is a super-2 number, since 2×25056631² = 1255669514140322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25056631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25056601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39205 + ... + 39838.

It is an arithmetic number, because the mean of its divisors is an integer number (6283998).

Almost surely, 2^25056631 is an apocalyptic number.

25056631 is a deficient number, since it is larger than the sum of its proper divisors (79361).

25056631 is an equidigital number, since it uses as much as digits as its factorization.

25056631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79360.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 25056631 is about 5005.6598965571. The cubic root of 25056631 is about 292.6223940505.

The spelling of 25056631 in words is "twenty-five million, fifty-six thousand, six hundred thirty-one".