25264431 has 24 divisors (see below), whose sum is σ = 39287664. Its totient is φ = 15586560.

The previous prime is 25264417. The next prime is 25264441. The reversal of 25264431 is 13446252.

It is not a de Polignac number, because 25264431 - 2⁵ = 25264399 is a prime.

It is a super-2 number, since 2×25264431² = 1276582947507522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25264395 and 25264404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25264441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7980 + ... + 10686.

It is an arithmetic number, because the mean of its divisors is an integer number (1636986).

Almost surely, 2^25264431 is an apocalyptic number.

25264431 is a deficient number, since it is larger than the sum of its proper divisors (14023233).

25264431 is a wasteful number, since it uses less digits than its factorization.

25264431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 2788 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 25264431 is about 5026.3735436197. The cubic root of 25264431 is about 293.4290947961.

The spelling of 25264431 in words is "twenty-five million, two hundred sixty-four thousand, four hundred thirty-one".