23525517 has 4 divisors (see below), whose sum is σ = 31367360. Its totient is φ = 15683676.

The previous prime is 23525479. The next prime is 23525519. The reversal of 23525517 is 71552532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23525517 - 2⁸ = 23525261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23525519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3920917 + ... + 3920922.

It is an arithmetic number, because the mean of its divisors is an integer number (7841840).

Almost surely, 2^23525517 is an apocalyptic number.

It is an amenable number.

23525517 is a deficient number, since it is larger than the sum of its proper divisors (7841843).

23525517 is an equidigital number, since it uses as much as digits as its factorization.

23525517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7841842.

The product of its digits is 10500, while the sum is 30.

The square root of 23525517 is about 4850.3110209553. The cubic root of 23525517 is about 286.5363506898.

It can be divided in two parts, 23525 and 517, that added together give a palindrome (24042).

The spelling of 23525517 in words is "twenty-three million, five hundred twenty-five thousand, five hundred seventeen".