23305525 has 6 divisors (see below), whose sum is σ = 28898882. Its totient is φ = 18644400.

The previous prime is 23305519. The next prime is 23305543. The reversal of 23305525 is 52550332.

It can be written as a sum of positive squares in 3 ways, for example, as 1234321 + 22071204 = 1111^2 + 4698^2 .

It is not a de Polignac number, because 23305525 - 2³ = 23305517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 932221 = 23305525 / (2 + 3 + 3 + 0 + 5 + 5 + 2 + 5).

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 23305525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 466086 + ... + 466135.

Almost surely, 2^23305525 is an apocalyptic number.

23305525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23305525 is a deficient number, since it is larger than the sum of its proper divisors (5593357).

23305525 is an equidigital number, since it uses as much as digits as its factorization.

23305525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932231 (or 932226 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 23305525 is about 4827.5796213009. The cubic root of 23305525 is about 285.6403984535.

Adding to 23305525 its reverse (52550332), we get a palindrome (75855857).

The spelling of 23305525 in words is "twenty-three million, three hundred five thousand, five hundred twenty-five".