25888882778 has 16 divisors (see below), whose sum is σ = 42438892896. Its totient is φ = 11746766640.

The previous prime is 25888882753. The next prime is 25888882787. The reversal of 25888882778 is 87728888852.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032701 + ... + 1057472.

It is an arithmetic number, because the mean of its divisors is an integer number (2652430806).

Almost surely, 2^25888882778 is an apocalyptic number.

25888882778 is a deficient number, since it is larger than the sum of its proper divisors (16550010118).

25888882778 is a wasteful number, since it uses less digits than its factorization.

25888882778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090749.

The product of its digits is 256901120, while the sum is 71.

The spelling of 25888882778 in words is "twenty-five billion, eight hundred eighty-eight million, eight hundred eighty-two thousand, seven hundred seventy-eight".