25733790217 has 2 divisors, whose sum is σ = 25733790218. Its totient is φ = 25733790216.

The previous prime is 25733790211. The next prime is 25733790227. The reversal of 25733790217 is 71209733752.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25641937161 + 91853056 = 160131^2 + 9584^2 .

It is a cyclic number.

It is not a de Polignac number, because 25733790217 - 2²³ = 25725401609 is a prime.

It is not a weakly prime, because it can be changed into another prime (25733790211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12866895108 + 12866895109.

It is an arithmetic number, because the mean of its divisors is an integer number (12866895109).

Almost surely, 2^25733790217 is an apocalyptic number.

It is an amenable number.

25733790217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25733790217 is an equidigital number, since it uses as much as digits as its factorization.

25733790217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 555660, while the sum is 46.

The spelling of 25733790217 in words is "twenty-five billion, seven hundred thirty-three million, seven hundred ninety thousand, two hundred seventeen".