23217525 has 36 divisors (see below), whose sum is σ = 43781920. Its totient is φ = 11728800.

The previous prime is 23217479. The next prime is 23217533. The reversal of 23217525 is 52571232.

It is not a de Polignac number, because 23217525 - 2⁸ = 23217269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1560 + ... + 6990.

Almost surely, 2^23217525 is an apocalyptic number.

23217525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23217525 is a deficient number, since it is larger than the sum of its proper divisors (20564395).

23217525 is a wasteful number, since it uses less digits than its factorization.

23217525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466 (or 5458 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 23217525 is about 4818.4567031364. The cubic root of 23217525 is about 285.2804257390.

Adding to 23217525 its reverse (52571232), we get a palindrome (75788757).

The spelling of 23217525 in words is "twenty-three million, two hundred seventeen thousand, five hundred twenty-five".