20556225152 has 16 divisors (see below), whose sum is σ = 40951855050. Its totient is φ = 10278112512.

The previous prime is 20556225133. The next prime is 20556225167. The reversal of 20556225152 is 25152265502.

It can be written as a sum of positive squares in only one way, i.e., 20157184576 + 399040576 = 141976^2 + 19976^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80297627 + ... + 80297882.

Almost surely, 2^20556225152 is an apocalyptic number.

It is an amenable number.

20556225152 is a deficient number, since it is larger than the sum of its proper divisors (20395629898).

20556225152 is an equidigital number, since it uses as much as digits as its factorization.

20556225152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160595523 (or 160595511 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 20556225152 in words is "twenty billion, five hundred fifty-six million, two hundred twenty-five thousand, one hundred fifty-two".