25391681076 has 96 divisors (see below), whose sum is σ = 60516263808. Its totient is φ = 8285184000.

The previous prime is 25391681053. The next prime is 25391681141. The reversal of 25391681076 is 67018619352.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 68074026 + ... + 68074398.

It is an arithmetic number, because the mean of its divisors is an integer number (630377748).

Almost surely, 2^25391681076 is an apocalyptic number.

It is an amenable number.

25391681076 is an abundant number, since it is smaller than the sum of its proper divisors (35124582732).

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

25391681076 is a wasteful number, since it uses less digits than its factorization.

25391681076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 25391681076 in words is "twenty-five billion, three hundred ninety-one million, six hundred eighty-one thousand, seventy-six".