12504215 has 4 divisors (see below), whose sum is σ = 15005064. Its totient is φ = 10003368.

The previous prime is 12504169. The next prime is 12504227. The reversal of 12504215 is 51240521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51240521 = 509 ⋅100669.

It is a cyclic number.

It is not a de Polignac number, because 12504215 - 2¹⁴ = 12487831 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, 1250417 + ... + 1250426.

It is an arithmetic number, because the mean of its divisors is an integer number (3751266).

Almost surely, 2^12504215 is an apocalyptic number.

12504215 is a deficient number, since it is larger than the sum of its proper divisors (2500849).

12504215 is an equidigital number, since it uses as much as digits as its factorization.

12504215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500848.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12504215 is about 3536.1299467073. The cubic root of 12504215 is about 232.1055244784.

Adding to 12504215 its reverse (51240521), we get a palindrome (63744736).

The spelling of 12504215 in words is "twelve million, five hundred four thousand, two hundred fifteen".