12506515 has 12 divisors (see below), whose sum is σ = 17458416. Its totient is φ = 8575728.

The previous prime is 12506497. The next prime is 12506519. The reversal of 12506515 is 51560521.

It is not a de Polignac number, because 12506515 - 2⁷ = 12506387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12506515.

It is not an unprimeable number, because it can be changed into a prime (12506519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25279 + ... + 25768.

It is an arithmetic number, because the mean of its divisors is an integer number (1454868).

Almost surely, 2^12506515 is an apocalyptic number.

12506515 is a deficient number, since it is larger than the sum of its proper divisors (4951901).

12506515 is an equidigital number, since it uses as much as digits as its factorization.

12506515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51066 (or 51059 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 12506515 is about 3536.4551460467. The cubic root of 12506515 is about 232.1197546128.

The spelling of 12506515 in words is "twelve million, five hundred six thousand, five hundred fifteen".