25085500858 has 16 divisors (see below), whose sum is σ = 41076771840. Its totient is φ = 11394786400.

The previous prime is 25085500841. The next prime is 25085500871. The reversal of 25085500858 is 85800558052.

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, 352378 + ... + 417541.

It is an arithmetic number, because the mean of its divisors is an integer number (2567298240).

Almost surely, 2^25085500858 is an apocalyptic number.

25085500858 is a deficient number, since it is larger than the sum of its proper divisors (15991270982).

25085500858 is a wasteful number, since it uses less digits than its factorization.

25085500858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771413.

The product of its (nonzero) digits is 640000, while the sum is 46.

The spelling of 25085500858 in words is "twenty-five billion, eighty-five million, five hundred thousand, eight hundred fifty-eight".