12805237 has 2 divisors, whose sum is σ = 12805238. Its totient is φ = 12805236.

The previous prime is 12805229. The next prime is 12805279. The reversal of 12805237 is 73250821.

12805237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9084196 + 3721041 = 3014^2 + 1929^2 .

It is a cyclic number.

It is not a de Polignac number, because 12805237 - 2³ = 12805229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12805217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402618 + 6402619.

It is an arithmetic number, because the mean of its divisors is an integer number (6402619).

Almost surely, 2^12805237 is an apocalyptic number.

It is an amenable number.

12805237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12805237 is an equidigital number, since it uses as much as digits as its factorization.

12805237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 12805237 is about 3578.4405821531. The cubic root of 12805237 is about 233.9533169590.

The spelling of 12805237 in words is "twelve million, eight hundred five thousand, two hundred thirty-seven".