20524553325 has 72 divisors (see below), whose sum is σ = 37332798048. Its totient is φ = 10777319040.

The previous prime is 20524553321. The next prime is 20524553327. The reversal of 20524553325 is 52335542502.

20524553325 is a `hidden beast` number, since 20 + 52 + 4 + 553 + 32 + 5 = 666.

It is not a de Polignac number, because 20524553325 - 2² = 20524553321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20524553325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20524553321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5918242 + ... + 5921708.

It is an arithmetic number, because the mean of its divisors is an integer number (518511084).

Almost surely, 2^20524553325 is an apocalyptic number.

20524553325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20524553325 is a deficient number, since it is larger than the sum of its proper divisors (16808244723).

20524553325 is a wasteful number, since it uses less digits than its factorization.

20524553325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883 (or 3875 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 20524553325 in words is "twenty billion, five hundred twenty-four million, five hundred fifty-three thousand, three hundred twenty-five".