25448648833 has 2 divisors, whose sum is σ = 25448648834. Its totient is φ = 25448648832.

The previous prime is 25448648779. The next prime is 25448648843. The reversal of 25448648833 is 33884684452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24455642689 + 993006144 = 156383^2 + 31512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25448648833 is a prime.

It is not a weakly prime, because it can be changed into another prime (25448648843) 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, 12724324416 + 12724324417.

It is an arithmetic number, because the mean of its divisors is an integer number (12724324417).

Almost surely, 2^25448648833 is an apocalyptic number.

It is an amenable number.

25448648833 is a deficient number, since it is larger than the sum of its proper divisors (1).

25448648833 is an equidigital number, since it uses as much as digits as its factorization.

25448648833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17694720, while the sum is 55.

The spelling of 25448648833 in words is "twenty-five billion, four hundred forty-eight million, six hundred forty-eight thousand, eight hundred thirty-three".