25346113217 has 2 divisors, whose sum is σ = 25346113218. Its totient is φ = 25346113216.

The previous prime is 25346113189. The next prime is 25346113301. The reversal of 25346113217 is 71231164352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24939042241 + 407070976 = 157921^2 + 20176^2 .

It is a cyclic number.

It is not a de Polignac number, because 25346113217 - 2¹⁰ = 25346112193 is a prime.

It is not a weakly prime, because it can be changed into another prime (25346413217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12673056608 + 12673056609.

It is an arithmetic number, because the mean of its divisors is an integer number (12673056609).

Almost surely, 2^25346113217 is an apocalyptic number.

It is an amenable number.

25346113217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25346113217 is an equidigital number, since it uses as much as digits as its factorization.

25346113217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

Adding to 25346113217 its reverse (71231164352), we get a palindrome (96577277569).

The spelling of 25346113217 in words is "twenty-five billion, three hundred forty-six million, one hundred thirteen thousand, two hundred seventeen".