25556678848 has 56 divisors (see below), whose sum is σ = 50986944000. Its totient is φ = 12709751040.

The previous prime is 25556678831. The next prime is 25556678893. The reversal of 25556678848 is 84887665552.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 25556678848.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17048403 + ... + 17049901.

Almost surely, 2^25556678848 is an apocalyptic number.

It is an amenable number.

25556678848 is a deficient number, since it is larger than the sum of its proper divisors (25430265152).

25556678848 is a wasteful number, since it uses less digits than its factorization.

25556678848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765 (or 2755 counting only the distinct ones).

The product of its digits is 129024000, while the sum is 64.

The spelling of 25556678848 in words is "twenty-five billion, five hundred fifty-six million, six hundred seventy-eight thousand, eight hundred forty-eight".