25978956876 has 24 divisors (see below), whose sum is σ = 67352851440. Its totient is φ = 8659652256.

The previous prime is 25978956869. The next prime is 25978956893. The reversal of 25978956876 is 67865987952.

25978956876 is a `hidden beast` number, since 2 + 59 + 7 + 8 + 9 + 568 + 7 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120272841 + ... + 120273056.

It is an arithmetic number, because the mean of its divisors is an integer number (2806368810).

Almost surely, 2^25978956876 is an apocalyptic number.

It is an amenable number.

25978956876 is an abundant number, since it is smaller than the sum of its proper divisors (41373894564).

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

25978956876 is a wasteful number, since it uses less digits than its factorization.

25978956876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240545910 (or 240545902 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 25978956876 in words is "twenty-five billion, nine hundred seventy-eight million, nine hundred fifty-six thousand, eight hundred seventy-six".