25049564831 has 8 divisors (see below), whose sum is σ = 26409763200. Its totient is φ = 23693546520.

The previous prime is 25049564819. The next prime is 25049564857. The reversal of 25049564831 is 13846594052.

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

It is a cyclic number.

It is not a de Polignac number, because 25049564831 - 2¹⁸ = 25049302687 is a prime.

It is a super-2 number, since 2×25049564831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25049564131) 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 7 ways as a sum of consecutive naturals, for example, 1032701 + ... + 1056678.

It is an arithmetic number, because the mean of its divisors is an integer number (3301220400).

Almost surely, 2^25049564831 is an apocalyptic number.

25049564831 is a deficient number, since it is larger than the sum of its proper divisors (1360198369).

25049564831 is a wasteful number, since it uses less digits than its factorization.

25049564831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090029.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 25049564831 in words is "twenty-five billion, forty-nine million, five hundred sixty-four thousand, eight hundred thirty-one".