25255216056 has 64 divisors (see below), whose sum is σ = 75295065600. Its totient is φ = 6902045568.

The previous prime is 25255216027. The next prime is 25255216061. The reversal of 25255216056 is 65061255252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3264151 + ... + 3271878.

It is an arithmetic number, because the mean of its divisors is an integer number (1176485400).

Almost surely, 2^25255216056 is an apocalyptic number.

It is an amenable number.

25255216056 is an abundant number, since it is smaller than the sum of its proper divisors (50039849544).

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

25255216056 is a wasteful number, since it uses less digits than its factorization.

25255216056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536068 (or 6536064 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 25255216056 in words is "twenty-five billion, two hundred fifty-five million, two hundred sixteen thousand, fifty-six".