20479718325 has 96 divisors (see below), whose sum is σ = 39061499904. Its totient is φ = 9374400000.

The previous prime is 20479718323. The next prime is 20479718401. The reversal of 20479718325 is 52381797402.

It is a happy number.

It is not a de Polignac number, because 20479718325 - 2¹ = 20479718323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20479718323) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1038810 + ... + 1058340.

It is an arithmetic number, because the mean of its divisors is an integer number (406890624).

Almost surely, 2^20479718325 is an apocalyptic number.

20479718325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20479718325 is a deficient number, since it is larger than the sum of its proper divisors (18581781579).

20479718325 is a wasteful number, since it uses less digits than its factorization.

20479718325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627 (or 19622 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 20479718325 in words is "twenty billion, four hundred seventy-nine million, seven hundred eighteen thousand, three hundred twenty-five".