12515215 has 8 divisors (see below), whose sum is σ = 15137280. Its totient is φ = 9932832.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515215 is 51251521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12515215 - 2⁵ = 12515183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9220 + ... + 10489.

It is an arithmetic number, because the mean of its divisors is an integer number (1892160).

Almost surely, 2^12515215 is an apocalyptic number.

12515215 is a deficient number, since it is larger than the sum of its proper divisors (2622065).

12515215 is a wasteful number, since it uses less digits than its factorization.

12515215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19841.

The product of its digits is 500, while the sum is 22.

The square root of 12515215 is about 3537.6849774959. The cubic root of 12515215 is about 232.1735658671.

Adding to 12515215 its reverse (51251521), we get a palindrome (63766736).

The spelling of 12515215 in words is "twelve million, five hundred fifteen thousand, two hundred fifteen".