12515252 has 6 divisors (see below), whose sum is σ = 21901698. Its totient is φ = 6257624.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515252 is 25251521.

It can be written as a sum of positive squares in only one way, i.e., 12138256 + 376996 = 3484^2 + 614^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1564403 + ... + 1564410.

It is an arithmetic number, because the mean of its divisors is an integer number (3650283).

Almost surely, 2^12515252 is an apocalyptic number.

It is an amenable number.

12515252 is a deficient number, since it is larger than the sum of its proper divisors (9386446).

12515252 is a wasteful number, since it uses less digits than its factorization.

12515252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128817 (or 3128815 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 12515252 is about 3537.6902069005. The cubic root of 12515252 is about 232.1737946663.

Adding to 12515252 its reverse (25251521), we get a palindrome (37766773).

The spelling of 12515252 in words is "twelve million, five hundred fifteen thousand, two hundred fifty-two".