12425217 has 16 divisors (see below), whose sum is σ = 19218432. Its totient is φ = 6993360.

The previous prime is 12425209. The next prime is 12425227. The reversal of 12425217 is 71252421.

12425217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12425217 - 2³ = 12425209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12425207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3009 + ... + 5822.

It is an arithmetic number, because the mean of its divisors is an integer number (1201152).

Almost surely, 2^12425217 is an apocalyptic number.

It is an amenable number.

12425217 is a deficient number, since it is larger than the sum of its proper divisors (6793215).

12425217 is an equidigital number, since it uses as much as digits as its factorization.

12425217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8908.

The product of its digits is 1120, while the sum is 24.

The square root of 12425217 is about 3524.9421271845. The cubic root of 12425217 is about 231.6156997301.

Adding to 12425217 its reverse (71252421), we get a palindrome (83677638).

The spelling of 12425217 in words is "twelve million, four hundred twenty-five thousand, two hundred seventeen".