12509259 has 24 divisors (see below), whose sum is σ = 19863360. Its totient is φ = 6978384.

The previous prime is 12509251. The next prime is 12509267. The reversal of 12509259 is 95290521.

It is an interprime number because it is at equal distance from previous prime (12509251) and next prime (12509267).

It is not a de Polignac number, because 12509259 - 2³ = 12509251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12509251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5332 + ... + 7310.

It is an arithmetic number, because the mean of its divisors is an integer number (827640).

Almost surely, 2^12509259 is an apocalyptic number.

12509259 is a deficient number, since it is larger than the sum of its proper divisors (7354101).

12509259 is a wasteful number, since it uses less digits than its factorization.

12509259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 12509259 is about 3536.8430838814. The cubic root of 12509259 is about 232.1367294996.

The spelling of 12509259 in words is "twelve million, five hundred nine thousand, two hundred fifty-nine".