20472715625 has 24 divisors (see below), whose sum is σ = 25617485376. Its totient is φ = 16360110000.

The previous prime is 20472715603. The next prime is 20472715661. The reversal of 20472715625 is 52651727402.

It is not a de Polignac number, because 20472715625 - 2⁸ = 20472715369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3318794 + ... + 3324956.

It is an arithmetic number, because the mean of its divisors is an integer number (1067395224).

Almost surely, 2^20472715625 is an apocalyptic number.

20472715625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20472715625 is a deficient number, since it is larger than the sum of its proper divisors (5144769751).

20472715625 is an frugal number, since it uses more digits than its factorization.

20472715625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251 (or 7231 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 20472715625 in words is "twenty billion, four hundred seventy-two million, seven hundred fifteen thousand, six hundred twenty-five".