12525252525217 has 2 divisors, whose sum is σ = 12525252525218. Its totient is φ = 12525252525216.

The previous prime is 12525252525211. The next prime is 12525252525257. The reversal of 12525252525217 is 71252525252521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7904369183841 + 4620883341376 = 2811471^2 + 2149624^2 .

It is a cyclic number.

It is not a de Polignac number, because 12525252525217 - 2¹¹ = 12525252523169 is a prime.

It is not a weakly prime, because it can be changed into another prime (12525252525211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6262626262608 + 6262626262609.

It is an arithmetic number, because the mean of its divisors is an integer number (6262626262609).

Almost surely, 2^{12525252525217} is an apocalyptic number.

It is an amenable number.

12525252525217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12525252525217 is an equidigital number, since it uses as much as digits as its factorization.

12525252525217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400000, while the sum is 46.

Adding to 12525252525217 its reverse (71252525252521), we get a palindrome (83777777777738).

The spelling of 12525252525217 in words is "twelve trillion, five hundred twenty-five billion, two hundred fifty-two million, five hundred twenty-five thousand, two hundred seventeen".