12525200217 has 6 divisors (see below), whose sum is σ = 18091955882. Its totient is φ = 8350133472.

The previous prime is 12525200209. The next prime is 12525200251. The reversal of 12525200217 is 71200252521.

12525200217 is a `hidden beast` number, since 125 + 2 + 520 + 0 + 2 + 17 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12502817856 + 22382361 = 111816^2 + 4731^2 .

It is not a de Polignac number, because 12525200217 - 2³ = 12525200209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12525200257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 695844448 + ... + 695844465.

Almost surely, 2^12525200217 is an apocalyptic number.

It is an amenable number.

12525200217 is a deficient number, since it is larger than the sum of its proper divisors (5566755665).

12525200217 is a wasteful number, since it uses less digits than its factorization.

12525200217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391688919 (or 1391688916 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

Adding to 12525200217 its reverse (71200252521), we get a palindrome (83725452738).

The spelling of 12525200217 in words is "twelve billion, five hundred twenty-five million, two hundred thousand, two hundred seventeen".