23425531 has 8 divisors (see below), whose sum is σ = 23797760. Its totient is φ = 23056488.

The previous prime is 23425513. The next prime is 23425543. The reversal of 23425531 is 13552432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23425531 - 2⁹ = 23425019 is a prime.

It is a super-2 number, since 2×23425531² = 1097511005263922, 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 = 23425496 and 23425505.

It is not an unprimeable number, because it can be changed into a prime (23425931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16990 + ... + 18316.

It is an arithmetic number, because the mean of its divisors is an integer number (2974720).

Almost surely, 2^23425531 is an apocalyptic number.

23425531 is a deficient number, since it is larger than the sum of its proper divisors (372229).

23425531 is a wasteful number, since it uses less digits than its factorization.

23425531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593.

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

The square root of 23425531 is about 4839.9928718956. The cubic root of 23425531 is about 286.1298373754.

Adding to 23425531 its reverse (13552432), we get a palindrome (36977963).

The spelling of 23425531 in words is "twenty-three million, four hundred twenty-five thousand, five hundred thirty-one".