25244431252 has 48 divisors (see below), whose sum is σ = 46349452800. Its totient is φ = 12015590400.

The previous prime is 25244431249. The next prime is 25244431279. The reversal of 25244431252 is 25213444252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7317624 + ... + 7321072.

It is an arithmetic number, because the mean of its divisors is an integer number (965613600).

Almost surely, 2^25244431252 is an apocalyptic number.

It is an amenable number.

25244431252 is a deficient number, since it is larger than the sum of its proper divisors (21105021548).

25244431252 is a wasteful number, since it uses less digits than its factorization.

25244431252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432 (or 4430 counting only the distinct ones).

The product of its digits is 76800, while the sum is 34.

The spelling of 25244431252 in words is "twenty-five billion, two hundred forty-four million, four hundred thirty-one thousand, two hundred fifty-two".