25342431 has 4 divisors (see below), whose sum is σ = 33789912. Its totient is φ = 16894952.

The previous prime is 25342423. The next prime is 25342439. The reversal of 25342431 is 13424352.

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

It is an interprime number because it is at equal distance from previous prime (25342423) and next prime (25342439).

It is a cyclic number.

It is not a de Polignac number, because 25342431 - 2³ = 25342423 is a prime.

It is a super-2 number, since 2×25342431² = 1284477617979522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25342439) 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, 4223736 + ... + 4223741.

It is an arithmetic number, because the mean of its divisors is an integer number (8447478).

Almost surely, 2^25342431 is an apocalyptic number.

25342431 is a deficient number, since it is larger than the sum of its proper divisors (8447481).

25342431 is an equidigital number, since it uses as much as digits as its factorization.

25342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8447480.

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

The square root of 25342431 is about 5034.1266372629. The cubic root of 25342431 is about 293.7307567898.

Adding to 25342431 its reverse (13424352), we get a palindrome (38766783).

The spelling of 25342431 in words is "twenty-five million, three hundred forty-two thousand, four hundred thirty-one".