25653056644 has 96 divisors (see below), whose sum is σ = 51093504000. Its totient is φ = 11197315584.

The previous prime is 25653056621. The next prime is 25653056657. The reversal of 25653056644 is 44665035652.

It is a junction number, because it is equal to n+sod(n) for n = 25653056594 and 25653056603.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12961647 + ... + 12963625.

It is an arithmetic number, because the mean of its divisors is an integer number (532224000).

Almost surely, 2^25653056644 is an apocalyptic number.

It is an amenable number.

25653056644 is a deficient number, since it is larger than the sum of its proper divisors (25440447356).

25653056644 is a wasteful number, since it uses less digits than its factorization.

25653056644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 25653056644 in words is "twenty-five billion, six hundred fifty-three million, fifty-six thousand, six hundred forty-four".