23772336525 has 54 divisors (see below), whose sum is σ = 49530575562. Its totient is φ = 10867348800.

The previous prime is 23772336499. The next prime is 23772336559. The reversal of 23772336525 is 52563327732.

23772336525 is a `hidden beast` number, since 2 + 3 + 77 + 23 + 36 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2169510084 + 21602826441 = 46578^2 + 146979^2 .

It is not a de Polignac number, because 23772336525 - 2¹¹ = 23772334477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1067086 + ... + 1089135.

Almost surely, 2^23772336525 is an apocalyptic number.

23772336525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23772336525 is an abundant number, since it is smaller than the sum of its proper divisors (25758239037).

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

23772336525 is a wasteful number, since it uses less digits than its factorization.

23772336525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156251 (or 2156236 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 45.

The spelling of 23772336525 in words is "twenty-three billion, seven hundred seventy-two million, three hundred thirty-six thousand, five hundred twenty-five".