23717540025 has 27 divisors (see below), whose sum is σ = 42484887471. Its totient is φ = 12648122640.

The previous prime is 23717540023. The next prime is 23717540027. The reversal of 23717540025 is 52004571732.

The square root of 23717540025 is 154005.

It is a perfect power (a square), and thus also a powerful number.

23717540025 is a `hidden beast` number, since 23 + 71 + 7 + 540 + 0 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (23717540023) and next prime (23717540027).

It can be written as a sum of positive squares in only one way, i.e., 8538314409 + 15179225616 = 92403^2 + 123204^2 .

It is not a de Polignac number, because 23717540025 - 2¹ = 23717540023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23717540023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2304942 + ... + 2315208.

Almost surely, 2^23717540025 is an apocalyptic number.

23717540025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23717540025 is the 154005-th square number.

23717540025 is the 77003-rd centered octagonal number.

It is an amenable number.

23717540025 is a deficient number, since it is larger than the sum of its proper divisors (18767347446).

23717540025 is an frugal number, since it uses more digits than its factorization.

23717540025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20550 (or 10275 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

Multiplying 23717540025 by its sum of digits (36), we get a square (853831440900 = 924030²).

The spelling of 23717540025 in words is "twenty-three billion, seven hundred seventeen million, five hundred forty thousand, twenty-five".