12515156 has 6 divisors (see below), whose sum is σ = 21901530. Its totient is φ = 6257576.

The previous prime is 12515123. The next prime is 12515159. The reversal of 12515156 is 65151521.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 1359556 = 3340^2 + 1166^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564391 + ... + 1564398.

It is an arithmetic number, because the mean of its divisors is an integer number (3650255).

Almost surely, 2^12515156 is an apocalyptic number.

It is an amenable number.

12515156 is a deficient number, since it is larger than the sum of its proper divisors (9386374).

12515156 is a wasteful number, since it uses less digits than its factorization.

12515156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128793 (or 3128791 counting only the distinct ones).

The product of its digits is 1500, while the sum is 26.

The square root of 12515156 is about 3537.6766386995. The cubic root of 12515156 is about 232.1732010242.

Adding to 12515156 its reverse (65151521), we get a palindrome (77666677).

It can be divided in two parts, 1251515 and 6, that added together give a palindrome (1251521).

The spelling of 12515156 in words is "twelve million, five hundred fifteen thousand, one hundred fifty-six".