25342131 has 4 divisors (see below), whose sum is σ = 33789512. Its totient is φ = 16894752.

The previous prime is 25342111. The next prime is 25342139. The reversal of 25342131 is 13124352.

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

It is not a de Polignac number, because 25342131 - 2⁹ = 25341619 is a prime.

It is a super-2 number, since 2×25342131² = 1284447207242322, 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 = 25342098 and 25342107.

It is not an unprimeable number, because it can be changed into a prime (25342139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4223686 + ... + 4223691.

It is an arithmetic number, because the mean of its divisors is an integer number (8447378).

Almost surely, 2^25342131 is an apocalyptic number.

25342131 is a deficient number, since it is larger than the sum of its proper divisors (8447381).

25342131 is an equidigital number, since it uses as much as digits as its factorization.

25342131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447380.

The product of its digits is 720, while the sum is 21.

The square root of 25342131 is about 5034.0968405465. The cubic root of 25342131 is about 293.7295977380.

Adding to 25342131 its reverse (13124352), we get a palindrome (38466483).

The spelling of 25342131 in words is "twenty-five million, three hundred forty-two thousand, one hundred thirty-one".