12225518 has 8 divisors (see below), whose sum is σ = 18373800. Its totient is φ = 6100920.

The previous prime is 12225491. The next prime is 12225527. The reversal of 12225518 is 81552221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4568 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (2296725).

Almost surely, 2^12225518 is an apocalyptic number.

12225518 is a deficient number, since it is larger than the sum of its proper divisors (6148282).

12225518 is a wasteful number, since it uses less digits than its factorization.

12225518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11842.

The product of its digits is 1600, while the sum is 26.

The square root of 12225518 is about 3496.5008222507. The cubic root of 12225518 is about 230.3681438844.

Adding to 12225518 its reverse (81552221), we get a palindrome (93777739).

The spelling of 12225518 in words is "twelve million, two hundred twenty-five thousand, five hundred eighteen".