25988262889 has 2 divisors, whose sum is σ = 25988262890. Its totient is φ = 25988262888.

The previous prime is 25988262869. The next prime is 25988262931. The reversal of 25988262889 is 98826288952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13726465600 + 12261797289 = 117160^2 + 110733^2 .

It is a cyclic number.

It is not a de Polignac number, because 25988262889 - 2²⁵ = 25954708457 is a prime.

It is not a weakly prime, because it can be changed into another prime (25988262869) 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, 12994131444 + 12994131445.

It is an arithmetic number, because the mean of its divisors is an integer number (12994131445).

Almost surely, 2^25988262889 is an apocalyptic number.

It is an amenable number.

25988262889 is a deficient number, since it is larger than the sum of its proper divisors (1).

25988262889 is an equidigital number, since it uses as much as digits as its factorization.

25988262889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79626240, while the sum is 67.

The spelling of 25988262889 in words is "twenty-five billion, nine hundred eighty-eight million, two hundred sixty-two thousand, eight hundred eighty-nine".