12785249 has 2 divisors, whose sum is σ = 12785250. Its totient is φ = 12785248.

The previous prime is 12785221. The next prime is 12785257. The reversal of 12785249 is 94258721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 4624 = 3575^2 + 68^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12785249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12785209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392624 + 6392625.

It is an arithmetic number, because the mean of its divisors is an integer number (6392625).

Almost surely, 2^12785249 is an apocalyptic number.

It is an amenable number.

12785249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12785249 is an equidigital number, since it uses as much as digits as its factorization.

12785249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 12785249 is about 3575.6466548025. The cubic root of 12785249 is about 233.8315257964.

The spelling of 12785249 in words is "twelve million, seven hundred eighty-five thousand, two hundred forty-nine".