25980886277 has 2 divisors, whose sum is σ = 25980886278. Its totient is φ = 25980886276.

The previous prime is 25980886271. The next prime is 25980886291. The reversal of 25980886277 is 77268808952.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22690601956 + 3290284321 = 150634^2 + 57361^2 .

It is a cyclic number.

It is not a de Polignac number, because 25980886277 - 2¹⁸ = 25980624133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25980886271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12990443138 + 12990443139.

It is an arithmetic number, because the mean of its divisors is an integer number (12990443139).

Almost surely, 2^25980886277 is an apocalyptic number.

It is an amenable number.

25980886277 is a deficient number, since it is larger than the sum of its proper divisors (1).

25980886277 is an equidigital number, since it uses as much as digits as its factorization.

25980886277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27095040, while the sum is 62.

The spelling of 25980886277 in words is "twenty-five billion, nine hundred eighty million, eight hundred eighty-six thousand, two hundred seventy-seven".