25878853129 has 2 divisors, whose sum is σ = 25878853130. Its totient is φ = 25878853128.

The previous prime is 25878853093. The next prime is 25878853151. The reversal of 25878853129 is 92135887852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14701077504 + 11177775625 = 121248^2 + 105725^2 .

It is a cyclic number.

It is not a de Polignac number, because 25878853129 - 2²⁷ = 25744635401 is a prime.

It is not a weakly prime, because it can be changed into another prime (25878893129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12939426564 + 12939426565.

It is an arithmetic number, because the mean of its divisors is an integer number (12939426565).

Almost surely, 2^25878853129 is an apocalyptic number.

It is an amenable number.

25878853129 is a deficient number, since it is larger than the sum of its proper divisors (1).

25878853129 is an equidigital number, since it uses as much as digits as its factorization.

25878853129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9676800, while the sum is 58.

The spelling of 25878853129 in words is "twenty-five billion, eight hundred seventy-eight million, eight hundred fifty-three thousand, one hundred twenty-nine".