25868958220 has 24 divisors (see below), whose sum is σ = 62085500064. Its totient is φ = 8869357056.

The previous prime is 25868958217. The next prime is 25868958253. The reversal of 25868958220 is 2285986852.

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, 92388997 + ... + 92389276.

It is an arithmetic number, because the mean of its divisors is an integer number (2586895836).

Almost surely, 2^25868958220 is an apocalyptic number.

25868958220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25868958220 is an abundant number, since it is smaller than the sum of its proper divisors (36216541844).

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

25868958220 is a wasteful number, since it uses less digits than its factorization.

25868958220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184778289 (or 184778287 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 25868958220 in words is "twenty-five billion, eight hundred sixty-eight million, nine hundred fifty-eight thousand, two hundred twenty".