12521465 has 8 divisors (see below), whose sum is σ = 16391808. Its totient is φ = 9106480.

The previous prime is 12521447. The next prime is 12521473. The reversal of 12521465 is 56412521.

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

It is not a de Polignac number, because 12521465 - 2²⁰ = 11472889 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113777 + ... + 113886.

It is an arithmetic number, because the mean of its divisors is an integer number (2048976).

Almost surely, 2^12521465 is an apocalyptic number.

It is an amenable number.

12521465 is a deficient number, since it is larger than the sum of its proper divisors (3870343).

12521465 is a wasteful number, since it uses less digits than its factorization.

12521465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227679.

The product of its digits is 2400, while the sum is 26.

The square root of 12521465 is about 3538.5682132750. The cubic root of 12521465 is about 232.2122079866.

Adding to 12521465 its reverse (56412521), we get a palindrome (68933986).

The spelling of 12521465 in words is "twelve million, five hundred twenty-one thousand, four hundred sixty-five".