25665404252 has 12 divisors (see below), whose sum is σ = 45650760456. Its totient is φ = 12622329840.

The previous prime is 25665404251. The next prime is 25665404273. The reversal of 25665404252 is 25240456652.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25665404251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52592798 + ... + 52593285.

It is an arithmetic number, because the mean of its divisors is an integer number (3804230038).

Almost surely, 2^25665404252 is an apocalyptic number.

It is an amenable number.

25665404252 is a deficient number, since it is larger than the sum of its proper divisors (19985356204).

25665404252 is a wasteful number, since it uses less digits than its factorization.

25665404252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105186148 (or 105186146 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 25665404252 in words is "twenty-five billion, six hundred sixty-five million, four hundred four thousand, two hundred fifty-two".