25965839329 has 2 divisors, whose sum is σ = 25965839330. Its totient is φ = 25965839328.

The previous prime is 25965839311. The next prime is 25965839381. The reversal of 25965839329 is 92393856952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17040691600 + 8925147729 = 130540^2 + 94473^2 .

It is a cyclic number.

It is not a de Polignac number, because 25965839329 - 2⁵ = 25965839297 is a prime.

It is not a weakly prime, because it can be changed into another prime (25965833329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12982919664 + 12982919665.

It is an arithmetic number, because the mean of its divisors is an integer number (12982919665).

Almost surely, 2^25965839329 is an apocalyptic number.

It is an amenable number.

25965839329 is a deficient number, since it is larger than the sum of its proper divisors (1).

25965839329 is an equidigital number, since it uses as much as digits as its factorization.

25965839329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31492800, while the sum is 61.

The spelling of 25965839329 in words is "twenty-five billion, nine hundred sixty-five million, eight hundred thirty-nine thousand, three hundred twenty-nine".