20925471552 has 56 divisors (see below), whose sum is σ = 58279284000. Its totient is φ = 6608042496.

The previous prime is 20925471529. The next prime is 20925471563. The reversal of 20925471552 is 25517452902.

It is a super-2 number, since 2×20925471552² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2864427 + ... + 2871722.

It is an arithmetic number, because the mean of its divisors is an integer number (1040701500).

Almost surely, 2^20925471552 is an apocalyptic number.

It is an amenable number.

20925471552 is an abundant number, since it is smaller than the sum of its proper divisors (37353812448).

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

20925471552 is a wasteful number, since it uses less digits than its factorization.

20925471552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5736183 (or 5736173 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 20925471552 in words is "twenty billion, nine hundred twenty-five million, four hundred seventy-one thousand, five hundred fifty-two".