12455250712117 has 2 divisors, whose sum is σ = 12455250712118. Its totient is φ = 12455250712116.

The previous prime is 12455250712063. The next prime is 12455250712153. The reversal of 12455250712117 is 71121705255421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9291437890596 + 3163812821521 = 3048186^2 + 1778711^2 .

It is an emirp because it is prime and its reverse (71121705255421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12455250712117 - 2²³ = 12455242323509 is a prime.

It is a super-2 number, since 2×12455250712117² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12455250712517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6227625356058 + 6227625356059.

It is an arithmetic number, because the mean of its divisors is an integer number (6227625356059).

Almost surely, 2^{12455250712117} is an apocalyptic number.

It is an amenable number.

12455250712117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12455250712117 is an equidigital number, since it uses as much as digits as its factorization.

12455250712117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 43.

Adding to 12455250712117 its reverse (71121705255421), we get a palindrome (83576955967538).

The spelling of 12455250712117 in words is "twelve trillion, four hundred fifty-five billion, two hundred fifty million, seven hundred twelve thousand, one hundred seventeen".