25956881 has 2 divisors, whose sum is σ = 25956882. Its totient is φ = 25956880.

The previous prime is 25956863. The next prime is 25956893. The reversal of 25956881 is 18865952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23425600 + 2531281 = 4840^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 25956881 - 2⁶ = 25956817 is a prime.

It is a super-2 number, since 2×25956881² = 1347519342496322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25956851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12978440 + 12978441.

It is an arithmetic number, because the mean of its divisors is an integer number (12978441).

Almost surely, 2^25956881 is an apocalyptic number.

It is an amenable number.

25956881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25956881 is an equidigital number, since it uses as much as digits as its factorization.

25956881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 44.

The square root of 25956881 is about 5094.7895933002. The cubic root of 25956881 is about 296.0857471629.

The spelling of 25956881 in words is "twenty-five million, nine hundred fifty-six thousand, eight hundred eighty-one".