23321525 has 12 divisors (see below), whose sum is σ = 29036832. Its totient is φ = 18581040.

The previous prime is 23321521. The next prime is 23321527. The reversal of 23321525 is 52512332.

It is not a de Polignac number, because 23321525 - 2² = 23321521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23321525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4802 + ... + 8348.

It is an arithmetic number, because the mean of its divisors is an integer number (2419736).

Almost surely, 2^23321525 is an apocalyptic number.

23321525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23321525 is a deficient number, since it is larger than the sum of its proper divisors (5715307).

23321525 is a wasteful number, since it uses less digits than its factorization.

23321525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820 (or 3815 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 23321525 is about 4829.2364820953. The cubic root of 23321525 is about 285.7057506379.

Adding to 23321525 its reverse (52512332), we get a palindrome (75833857).

The spelling of 23321525 in words is "twenty-three million, three hundred twenty-one thousand, five hundred twenty-five".