12516250 has 80 divisors (see below), whose sum is σ = 26991360. Its totient is φ = 4320000.

The previous prime is 12516247. The next prime is 12516253. The reversal of 12516250 is 5261521.

It is an interprime number because it is at equal distance from previous prime (12516247) and next prime (12516253).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12516253) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 403735 + ... + 403765.

It is an arithmetic number, because the mean of its divisors is an integer number (337392).

Almost surely, 2^12516250 is an apocalyptic number.

12516250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12516250 is an abundant number, since it is smaller than the sum of its proper divisors (14475110).

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

12516250 is a wasteful number, since it uses less digits than its factorization.

12516250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 12516250 is about 3537.8312565751. The cubic root of 12516250 is about 232.1799658908.

Adding to 12516250 its reverse (5261521), we get a palindrome (17777771).

The spelling of 12516250 in words is "twelve million, five hundred sixteen thousand, two hundred fifty".