12515250 has 128 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 2880000.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515250 is 5251521.

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 63 ways as a sum of consecutive naturals, for example, 305230 + ... + 305270.

It is an arithmetic number, because the mean of its divisors is an integer number (280098).

Almost surely, 2^12515250 is an apocalyptic number.

12515250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12515250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17926272).

12515250 is an abundant number, since it is smaller than the sum of its proper divisors (23337294).

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

12515250 is a wasteful number, since it uses less digits than its factorization.

12515250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 12515250 is about 3537.6899242302. The cubic root of 12515250 is about 232.1737822988.

Adding to 12515250 its reverse (5251521), we get a palindrome (17766771).

The spelling of 12515250 in words is "twelve million, five hundred fifteen thousand, two hundred fifty".