25713631 has 16 divisors (see below), whose sum is σ = 28211200. Its totient is φ = 23351328.

The previous prime is 25713629. The next prime is 25713637. The reversal of 25713631 is 13631752.

It is a cyclic number.

It is not a de Polignac number, because 25713631 - 2¹ = 25713629 is a prime.

It is a super-2 number, since 2×25713631² = 1322381638408322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25713631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25713637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55306 + ... + 55768.

It is an arithmetic number, because the mean of its divisors is an integer number (1763200).

Almost surely, 2^25713631 is an apocalyptic number.

25713631 is a deficient number, since it is larger than the sum of its proper divisors (2497569).

25713631 is a wasteful number, since it uses less digits than its factorization.

25713631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598.

The product of its digits is 3780, while the sum is 28.

The square root of 25713631 is about 5070.8609722610. The cubic root of 25713631 is about 295.1579389830.

The spelling of 25713631 in words is "twenty-five million, seven hundred thirteen thousand, six hundred thirty-one".