25880581256 has 16 divisors (see below), whose sum is σ = 49110742800. Its totient is φ = 12784383184.

The previous prime is 25880581189. The next prime is 25880581267. The reversal of 25880581256 is 65218508852.

It is a super-2 number, since 2×25880581256² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19487726 + ... + 19489053.

It is an arithmetic number, because the mean of its divisors is an integer number (3069421425).

Almost surely, 2^25880581256 is an apocalyptic number.

It is an amenable number.

25880581256 is a deficient number, since it is larger than the sum of its proper divisors (23230161544).

25880581256 is a wasteful number, since it uses less digits than its factorization.

25880581256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38976868 (or 38976864 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 50.

The spelling of 25880581256 in words is "twenty-five billion, eight hundred eighty million, five hundred eighty-one thousand, two hundred fifty-six".