25161232256 has 16 divisors (see below), whose sum is σ = 50125892640. Its totient is φ = 12580616064.

The previous prime is 25161232241. The next prime is 25161232301. The reversal of 25161232256 is 65223216152.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98285936 + ... + 98286191.

It is an arithmetic number, because the mean of its divisors is an integer number (3132868290).

Almost surely, 2^25161232256 is an apocalyptic number.

It is an amenable number.

25161232256 is a deficient number, since it is larger than the sum of its proper divisors (24964660384).

25161232256 is an equidigital number, since it uses as much as digits as its factorization.

25161232256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196572141 (or 196572129 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The spelling of 25161232256 in words is "twenty-five billion, one hundred sixty-one million, two hundred thirty-two thousand, two hundred fifty-six".