20225664004 has 24 divisors (see below), whose sum is σ = 43562969408. Its totient is φ = 8001361440.

The previous prime is 20225663993. The next prime is 20225664007. The reversal of 20225664004 is 40046652202.

It is not an unprimeable number, because it can be changed into a prime (20225664007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27782142 + ... + 27782869.

Almost surely, 2^20225664004 is an apocalyptic number.

It is an amenable number.

20225664004 is an abundant number, since it is smaller than the sum of its proper divisors (23337305404).

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

20225664004 is a wasteful number, since it uses less digits than its factorization.

20225664004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55565035 (or 55565033 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 20225664004 in words is "twenty billion, two hundred twenty-five million, six hundred sixty-four thousand, four".