12515207 has 4 divisors (see below), whose sum is σ = 12781536. Its totient is φ = 12248880.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515207 is 70251521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12515207 - 2² = 12515203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515201) 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 3 ways as a sum of consecutive naturals, for example, 133094 + ... + 133187.

It is an arithmetic number, because the mean of its divisors is an integer number (3195384).

Almost surely, 2^12515207 is an apocalyptic number.

12515207 is a deficient number, since it is larger than the sum of its proper divisors (266329).

12515207 is an equidigital number, since it uses as much as digits as its factorization.

12515207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266328.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 12515207 is about 3537.6838468128. The cubic root of 12515207 is about 232.1735163970.

Adding to 12515207 its reverse (70251521), we get a palindrome (82766728).

The spelling of 12515207 in words is "twelve million, five hundred fifteen thousand, two hundred seven".