25716631 has 8 divisors (see below), whose sum is σ = 27285984. Its totient is φ = 24153600.

The previous prime is 25716629. The next prime is 25716641. The reversal of 25716631 is 13661752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25716631 - 2¹ = 25716629 is a prime.

It is a super-2 number, since 2×25716631² = 1322690219980322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25716593 and 25716602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25716641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8806 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (3410748).

Almost surely, 2^25716631 is an apocalyptic number.

25716631 is a deficient number, since it is larger than the sum of its proper divisors (1569353).

25716631 is a wasteful number, since it uses less digits than its factorization.

25716631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161.

The product of its digits is 7560, while the sum is 31.

The square root of 25716631 is about 5071.1567713886. The cubic root of 25716631 is about 295.1694171932.

The spelling of 25716631 in words is "twenty-five million, seven hundred sixteen thousand, six hundred thirty-one".