25555502233 has 2 divisors, whose sum is σ = 25555502234. Its totient is φ = 25555502232.

The previous prime is 25555502179. The next prime is 25555502249. The reversal of 25555502233 is 33220555552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25302310489 + 253191744 = 159067^2 + 15912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25555502233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25555502192 and 25555502201.

It is not a weakly prime, because it can be changed into another prime (25555502933) 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, 12777751116 + 12777751117.

It is an arithmetic number, because the mean of its divisors is an integer number (12777751117).

Almost surely, 2^25555502233 is an apocalyptic number.

It is an amenable number.

25555502233 is a deficient number, since it is larger than the sum of its proper divisors (1).

25555502233 is an equidigital number, since it uses as much as digits as its factorization.

25555502233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225000, while the sum is 37.

The spelling of 25555502233 in words is "twenty-five billion, five hundred fifty-five million, five hundred two thousand, two hundred thirty-three".