12545218 has 16 divisors (see below), whose sum is σ = 22771584. Its totient is φ = 5060160.

The previous prime is 12545209. The next prime is 12545219. The reversal of 12545218 is 81254521.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12545219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26118 + ... + 26593.

It is an arithmetic number, because the mean of its divisors is an integer number (1423224).

Almost surely, 2^12545218 is an apocalyptic number.

12545218 is a deficient number, since it is larger than the sum of its proper divisors (10226366).

12545218 is a wasteful number, since it uses less digits than its factorization.

12545218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52737.

The product of its digits is 3200, while the sum is 28.

The square root of 12545218 is about 3541.9229240626. The cubic root of 12545218 is about 232.3589494021.

Adding to 12545218 its reverse (81254521), we get a palindrome (93799739).

The spelling of 12545218 in words is "twelve million, five hundred forty-five thousand, two hundred eighteen".