12816251 has 8 divisors (see below), whose sum is σ = 14669280. Its totient is φ = 10968768.

The previous prime is 12816247. The next prime is 12816257. The reversal of 12816251 is 15261821.

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 12816251 - 2² = 12816247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12816251.

It is not an unprimeable number, because it can be changed into a prime (12816257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6845 + ... + 8513.

It is an arithmetic number, because the mean of its divisors is an integer number (1833660).

Almost surely, 2^12816251 is an apocalyptic number.

12816251 is a deficient number, since it is larger than the sum of its proper divisors (1853029).

12816251 is a wasteful number, since it uses less digits than its factorization.

12816251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773.

The product of its digits is 960, while the sum is 26.

The square root of 12816251 is about 3579.9791898837. The cubic root of 12816251 is about 234.0203734666.

The spelling of 12816251 in words is "twelve million, eight hundred sixteen thousand, two hundred fifty-one".