20252705256 has 48 divisors (see below), whose sum is σ = 62686946400. Its totient is φ = 5786487072.

The previous prime is 20252705227. The next prime is 20252705267. The reversal of 20252705256 is 65250725202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20252705256.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20091466 + ... + 20092473.

It is an arithmetic number, because the mean of its divisors is an integer number (1305978050).

Almost surely, 2^20252705256 is an apocalyptic number.

It is an amenable number.

20252705256 is an abundant number, since it is smaller than the sum of its proper divisors (42434241144).

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

20252705256 is a wasteful number, since it uses less digits than its factorization.

20252705256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40183958 (or 40183951 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 20252705256 in words is "twenty billion, two hundred fifty-two million, seven hundred five thousand, two hundred fifty-six".