12518945 has 8 divisors (see below), whose sum is σ = 15101736. Its totient is φ = 9962496.

The previous prime is 12518939. The next prime is 12518959. The reversal of 12518945 is 54981521.

It can be written as a sum of positive squares in 4 ways, for example, as 380689 + 12138256 = 617^2 + 3484^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12518945 - 2⁶ = 12518881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5522 + ... + 7451.

It is an arithmetic number, because the mean of its divisors is an integer number (1887717).

Almost surely, 2^12518945 is an apocalyptic number.

It is an amenable number.

12518945 is a deficient number, since it is larger than the sum of its proper divisors (2582791).

12518945 is a wasteful number, since it uses less digits than its factorization.

12518945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13171.

The product of its digits is 14400, while the sum is 35.

The square root of 12518945 is about 3538.2121191359. The cubic root of 12518945 is about 232.1966290315.

The spelling of 12518945 in words is "twelve million, five hundred eighteen thousand, nine hundred forty-five".