12515330 has 8 divisors (see below), whose sum is σ = 22527612. Its totient is φ = 5006128.

The previous prime is 12515329. The next prime is 12515359. The reversal of 12515330 is 3351521.

12515330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11648569 + 866761 = 3413^2 + 931^2 .

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

It is a Curzon 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, 625757 + ... + 625776.

Almost surely, 2^12515330 is an apocalyptic number.

12515330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12515330 is a deficient number, since it is larger than the sum of its proper divisors (10012282).

12515330 is a wasteful number, since it uses less digits than its factorization.

12515330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251540.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12515330 is about 3537.7012310256. The cubic root of 12515330 is about 232.1742769983.

Adding to 12515330 its reverse (3351521), we get a palindrome (15866851).

The spelling of 12515330 in words is "twelve million, five hundred fifteen thousand, three hundred thirty".