12515226 has 16 divisors (see below), whose sum is σ = 25069824. Its totient is φ = 4165184.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515226 is 62251521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12515196 and 12515205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3970 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (1566864).

Almost surely, 2^12515226 is an apocalyptic number.

12515226 is an abundant number, since it is smaller than the sum of its proper divisors (12554598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12515226 is a wasteful number, since it uses less digits than its factorization.

12515226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285.

The product of its digits is 1200, while the sum is 24.

The square root of 12515226 is about 3537.6865321846. The cubic root of 12515226 is about 232.1736338885.

Adding to 12515226 its reverse (62251521), we get a palindrome (74766747).

It can be divided in two parts, 125 and 15226, that added together give a palindrome (15351).

The spelling of 12515226 in words is "twelve million, five hundred fifteen thousand, two hundred twenty-six".