12515500 has 24 divisors (see below), whose sum is σ = 27334944. Its totient is φ = 5006000.

The previous prime is 12515497. The next prime is 12515507. The reversal of 12515500 is 551521.

It is not an unprimeable number, because it can be changed into a prime (12515507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12016 + ... + 13015.

It is an arithmetic number, because the mean of its divisors is an integer number (1138956).

Almost surely, 2^12515500 is an apocalyptic number.

12515500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12515500 is an abundant number, since it is smaller than the sum of its proper divisors (14819444).

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

12515500 is a wasteful number, since it uses less digits than its factorization.

12515500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25050 (or 25038 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 12515500 is about 3537.7252578458. The cubic root of 12515500 is about 232.1753282277.

It can be divided in two parts, 125 and 15500, that added together give a 6-th power (15625 = 5⁶).

The spelling of 12515500 in words is "twelve million, five hundred fifteen thousand, five hundred".