12507245 has 4 divisors (see below), whose sum is σ = 15008700. Its totient is φ = 10005792.

The previous prime is 12507241. The next prime is 12507247. The reversal of 12507245 is 54270521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54270521 = 3797 ⋅14293.

It can be written as a sum of positive squares in 2 ways, for example, as 6421156 + 6086089 = 2534^2 + 2467^2 .

It is a cyclic number.

It is not a de Polignac number, because 12507245 - 2² = 12507241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250720 + ... + 1250729.

It is an arithmetic number, because the mean of its divisors is an integer number (3752175).

Almost surely, 2^12507245 is an apocalyptic number.

It is an amenable number.

12507245 is a deficient number, since it is larger than the sum of its proper divisors (2501455).

12507245 is an equidigital number, since it uses as much as digits as its factorization.

12507245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501454.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 12507245 is about 3536.5583552375. The cubic root of 12507245 is about 232.1242707689.

Adding to 12507245 its reverse (54270521), we get a palindrome (66777766).

The spelling of 12507245 in words is "twelve million, five hundred seven thousand, two hundred forty-five".