25342722439 has 2 divisors, whose sum is σ = 25342722440. Its totient is φ = 25342722438.

The previous prime is 25342722403. The next prime is 25342722527. The reversal of 25342722439 is 93422724352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25342722439 - 2⁷ = 25342722311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25342722395 and 25342722404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25342725439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671361219 + 12671361220.

It is an arithmetic number, because the mean of its divisors is an integer number (12671361220).

Almost surely, 2^25342722439 is an apocalyptic number.

25342722439 is a deficient number, since it is larger than the sum of its proper divisors (1).

25342722439 is an equidigital number, since it uses as much as digits as its factorization.

25342722439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 43.

The spelling of 25342722439 in words is "twenty-five billion, three hundred forty-two million, seven hundred twenty-two thousand, four hundred thirty-nine".