25913565233 has 2 divisors, whose sum is σ = 25913565234. Its totient is φ = 25913565232.

The previous prime is 25913565191. The next prime is 25913565263. The reversal of 25913565233 is 33256531952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25788505744 + 125059489 = 160588^2 + 11183^2 .

It is a cyclic number.

It is not a de Polignac number, because 25913565233 - 2³⁰ = 24839823409 is a prime.

It is not a weakly prime, because it can be changed into another prime (25913565263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956782616 + 12956782617.

It is an arithmetic number, because the mean of its divisors is an integer number (12956782617).

Almost surely, 2^25913565233 is an apocalyptic number.

It is an amenable number.

25913565233 is a deficient number, since it is larger than the sum of its proper divisors (1).

25913565233 is an equidigital number, since it uses as much as digits as its factorization.

25913565233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729000, while the sum is 44.

The spelling of 25913565233 in words is "twenty-five billion, nine hundred thirteen million, five hundred sixty-five thousand, two hundred thirty-three".