12582509 has 2 divisors, whose sum is σ = 12582510. Its totient is φ = 12582508.

The previous prime is 12582469. The next prime is 12582539. The reversal of 12582509 is 90528521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7645225 + 4937284 = 2765^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 12582509 - 2¹² = 12578413 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 (12582539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6291254 + 6291255.

It is an arithmetic number, because the mean of its divisors is an integer number (6291255).

Almost surely, 2^12582509 is an apocalyptic number.

It is an amenable number.

12582509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12582509 is an equidigital number, since it uses as much as digits as its factorization.

12582509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 12582509 is about 3547.1832487200. The cubic root of 12582509 is about 232.5889527438.

The spelling of 12582509 in words is "twelve million, five hundred eighty-two thousand, five hundred nine".