25995239 has 2 divisors, whose sum is σ = 25995240. Its totient is φ = 25995238.

The previous prime is 25995197. The next prime is 25995241. The reversal of 25995239 is 93259952.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25995239 - 2¹² = 25991143 is a prime.

Together with 25995241, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25995239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25995289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12997619 + 12997620.

It is an arithmetic number, because the mean of its divisors is an integer number (12997620).

Almost surely, 2^25995239 is an apocalyptic number.

25995239 is a deficient number, since it is larger than the sum of its proper divisors (1).

25995239 is an equidigital number, since it uses as much as digits as its factorization.

25995239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 44.

The square root of 25995239 is about 5098.5526377591. The cubic root of 25995239 is about 296.2315231167.

The spelling of 25995239 in words is "twenty-five million, nine hundred ninety-five thousand, two hundred thirty-nine".