25968962881 has 2 divisors, whose sum is σ = 25968962882. Its totient is φ = 25968962880.

The previous prime is 25968962879. The next prime is 25968962897. The reversal of 25968962881 is 18826986952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24845640625 + 1123322256 = 157625^2 + 33516^2 .

It is a cyclic number.

It is not a de Polignac number, because 25968962881 - 2¹ = 25968962879 is a prime.

It is a super-2 number, since 2×25968962881² (a number of 22 digits) contains 22 as substring.

Together with 25968962879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25968972881) 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, 12984481440 + 12984481441.

It is an arithmetic number, because the mean of its divisors is an integer number (12984481441).

Almost surely, 2^25968962881 is an apocalyptic number.

It is an amenable number.

25968962881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25968962881 is an equidigital number, since it uses as much as digits as its factorization.

25968962881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29859840, while the sum is 64.

The spelling of 25968962881 in words is "twenty-five billion, nine hundred sixty-eight million, nine hundred sixty-two thousand, eight hundred eighty-one".