23525431 has 4 divisors (see below), whose sum is σ = 24099264. Its totient is φ = 22951600.

The previous prime is 23525423. The next prime is 23525449. The reversal of 23525431 is 13452532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23525431 - 2³ = 23525423 is a prime.

It is a super-2 number, since 2×23525431² = 1106891807471522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23525396 and 23525405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23525231) 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, 286855 + ... + 286936.

It is an arithmetic number, because the mean of its divisors is an integer number (6024816).

Almost surely, 2^23525431 is an apocalyptic number.

23525431 is a deficient number, since it is larger than the sum of its proper divisors (573833).

23525431 is an equidigital number, since it uses as much as digits as its factorization.

23525431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573832.

The product of its digits is 3600, while the sum is 25.

The square root of 23525431 is about 4850.3021555363. The cubic root of 23525431 is about 286.5360015348.

Adding to 23525431 its reverse (13452532), we get a palindrome (36977963).

The spelling of 23525431 in words is "twenty-three million, five hundred twenty-five thousand, four hundred thirty-one".