12499015 has 4 divisors (see below), whose sum is σ = 14998824. Its totient is φ = 9999208.

The previous prime is 12499001. The next prime is 12499021. The reversal of 12499015 is 51099421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51099421 = 29 ⋅1762049.

It is a cyclic number.

It is not a de Polignac number, because 12499015 - 2¹³ = 12490823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249897 + ... + 1249906.

It is an arithmetic number, because the mean of its divisors is an integer number (3749706).

Almost surely, 2^12499015 is an apocalyptic number.

12499015 is a deficient number, since it is larger than the sum of its proper divisors (2499809).

12499015 is an equidigital number, since it uses as much as digits as its factorization.

12499015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499808.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 12499015 is about 3535.3946031525. The cubic root of 12499015 is about 232.0733455672.

The spelling of 12499015 in words is "twelve million, four hundred ninety-nine thousand, fifteen".