25322431 has 4 divisors (see below), whose sum is σ = 25515864. Its totient is φ = 25129000.

The previous prime is 25322419. The next prime is 25322441. The reversal of 25322431 is 13422352.

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 25322431 - 2⁷ = 25322303 is a prime.

It is a super-2 number, since 2×25322431² = 1282451023499522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25322411) 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, 96520 + ... + 96781.

It is an arithmetic number, because the mean of its divisors is an integer number (6378966).

Almost surely, 2^25322431 is an apocalyptic number.

25322431 is a deficient number, since it is larger than the sum of its proper divisors (193433).

25322431 is a wasteful number, since it uses less digits than its factorization.

25322431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193432.

The product of its digits is 1440, while the sum is 22.

The square root of 25322431 is about 5032.1398033044. The cubic root of 25322431 is about 293.6534666355.

Adding to 25322431 its reverse (13422352), we get a palindrome (38744783).

The spelling of 25322431 in words is "twenty-five million, three hundred twenty-two thousand, four hundred thirty-one".