25790992439 has 2 divisors, whose sum is σ = 25790992440. Its totient is φ = 25790992438.

The previous prime is 25790992433. The next prime is 25790992463. The reversal of 25790992439 is 93429909752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25790992439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25790992433) 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, 12895496219 + 12895496220.

It is an arithmetic number, because the mean of its divisors is an integer number (12895496220).

Almost surely, 2^25790992439 is an apocalyptic number.

25790992439 is a deficient number, since it is larger than the sum of its proper divisors (1).

25790992439 is an equidigital number, since it uses as much as digits as its factorization.

25790992439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The spelling of 25790992439 in words is "twenty-five billion, seven hundred ninety million, nine hundred ninety-two thousand, four hundred thirty-nine".