20164225256 has 16 divisors (see below), whose sum is σ = 43209054240. Its totient is φ = 8641810800.

The previous prime is 20164225241. The next prime is 20164225261. The reversal of 20164225256 is 65252246102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180037670 + ... + 180037781.

It is an arithmetic number, because the mean of its divisors is an integer number (2700565890).

Almost surely, 2^20164225256 is an apocalyptic number.

It is an amenable number.

20164225256 is an abundant number, since it is smaller than the sum of its proper divisors (23044828984).

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

20164225256 is a wasteful number, since it uses less digits than its factorization.

20164225256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360075464 (or 360075460 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 20164225256 in words is "twenty billion, one hundred sixty-four million, two hundred twenty-five thousand, two hundred fifty-six".