25342439 has 2 divisors, whose sum is σ = 25342440. Its totient is φ = 25342438.

The previous prime is 25342423. The next prime is 25342459. The reversal of 25342439 is 93424352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25342439 - 2⁴ = 25342423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25342459) 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, 12671219 + 12671220.

It is an arithmetic number, because the mean of its divisors is an integer number (12671220).

Almost surely, 2^25342439 is an apocalyptic number.

25342439 is a deficient number, since it is larger than the sum of its proper divisors (1).

25342439 is an equidigital number, since it uses as much as digits as its factorization.

25342439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 25342439 is about 5034.1274318396. The cubic root of 25342439 is about 293.7307876978.

The spelling of 25342439 in words is "twenty-five million, three hundred forty-two thousand, four hundred thirty-nine".