25468139 has 2 divisors, whose sum is σ = 25468140. Its totient is φ = 25468138.

The previous prime is 25468127. The next prime is 25468141. The reversal of 25468139 is 93186452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25468139 is a prime.

It is a super-2 number, since 2×25468139² = 1297252208246642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 25468141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25468109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12734069 + 12734070.

It is an arithmetic number, because the mean of its divisors is an integer number (12734070).

Almost surely, 2^25468139 is an apocalyptic number.

25468139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25468139 is an equidigital number, since it uses as much as digits as its factorization.

25468139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 25468139 is about 5046.5967740647. The cubic root of 25468139 is about 294.2156276749.

The spelling of 25468139 in words is "twenty-five million, four hundred sixty-eight thousand, one hundred thirty-nine".