23238530525 has 18 divisors (see below), whose sum is σ = 33520396410. Its totient is φ = 15934991520.

The previous prime is 23238530521. The next prime is 23238530533. The reversal of 23238530525 is 52503583232.

It can be written as a sum of positive squares in 3 ways, for example, as 6854018521 + 16384512004 = 82789^2 + 128002^2 .

It is not a de Polignac number, because 23238530525 - 2² = 23238530521 is a prime.

It is a super-2 number, since 2×23238530525² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23238530521) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9483890 + ... + 9486339.

It is an arithmetic number, because the mean of its divisors is an integer number (1862244245).

Almost surely, 2^23238530525 is an apocalyptic number.

23238530525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23238530525 is a deficient number, since it is larger than the sum of its proper divisors (10281865885).

23238530525 is a wasteful number, since it uses less digits than its factorization.

23238530525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18970253 (or 18970241 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 23238530525 in words is "twenty-three billion, two hundred thirty-eight million, five hundred thirty thousand, five hundred twenty-five".