12515130 has 48 divisors (see below), whose sum is σ = 32730984. Its totient is φ = 3317760.

The previous prime is 12515123. The next prime is 12515159. The reversal of 12515130 is 3151521.

It can be written as a sum of positive squares in 4 ways, for example, as 12510369 + 4761 = 3537^2 + 69^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon 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 in 23 ways as a sum of consecutive naturals, for example, 21402 + ... + 21978.

Almost surely, 2^12515130 is an apocalyptic number.

12515130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12515130 is an abundant number, since it is smaller than the sum of its proper divisors (20215854).

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

12515130 is a wasteful number, since it uses less digits than its factorization.

12515130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 12515130 is about 3537.6729639694. The cubic root of 12515130 is about 232.1730402456.

Adding to 12515130 its reverse (3151521), we get a palindrome (15666651).

The spelling of 12515130 in words is "twelve million, five hundred fifteen thousand, one hundred thirty".