25234431 has 4 divisors (see below), whose sum is σ = 33645912. Its totient is φ = 16822952.

The previous prime is 25234397. The next prime is 25234439. The reversal of 25234431 is 13443252.

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 25234431 - 2⁷ = 25234303 is a prime.

It is a super-2 number, since 2×25234431² = 1273553015787522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25234439) 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, 4205736 + ... + 4205741.

It is an arithmetic number, because the mean of its divisors is an integer number (8411478).

Almost surely, 2^25234431 is an apocalyptic number.

25234431 is a deficient number, since it is larger than the sum of its proper divisors (8411481).

25234431 is an equidigital number, since it uses as much as digits as its factorization.

25234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411480.

The product of its digits is 2880, while the sum is 24.

The square root of 25234431 is about 5023.3883982826. The cubic root of 25234431 is about 293.3129056309.

Adding to 25234431 its reverse (13443252), we get a palindrome (38677683).

The spelling of 25234431 in words is "twenty-five million, two hundred thirty-four thousand, four hundred thirty-one".