25956891441920 has 72 divisors (see below), whose sum is σ = 62205790088400. Its totient is φ = 10377592565760.

The previous prime is 25956891441911. The next prime is 25956891441947. The reversal of 25956891441920 is 2914419865952.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2467895 + ... + 7616054.

Almost surely, 2^{25956891441920} is an apocalyptic number.

25956891441920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25956891441920 is an abundant number, since it is smaller than the sum of its proper divisors (36248898646480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25956891441920 is a wasteful number, since it uses less digits than its factorization.

25956891441920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10085981 (or 10085967 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 65.

The spelling of 25956891441920 in words is "twenty-five trillion, nine hundred fifty-six billion, eight hundred ninety-one million, four hundred forty-one thousand, nine hundred twenty".