12882509 has 2 divisors, whose sum is σ = 12882510. Its totient is φ = 12882508.

The previous prime is 12882433. The next prime is 12882517. The reversal of 12882509 is 90528821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8970025 + 3912484 = 2995^2 + 1978^2 .

It is an emirp because it is prime and its reverse (90528821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12882509 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 (12882539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6441254 + 6441255.

It is an arithmetic number, because the mean of its divisors is an integer number (6441255).

Almost surely, 2^12882509 is an apocalyptic number.

It is an amenable number.

12882509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12882509 is an equidigital number, since it uses as much as digits as its factorization.

12882509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 12882509 is about 3589.2212247227. The cubic root of 12882509 is about 234.4229633158.

The spelling of 12882509 in words is "twelve million, eight hundred eighty-two thousand, five hundred nine".