12609251 has 2 divisors, whose sum is σ = 12609252. Its totient is φ = 12609250.

The previous prime is 12609241. The next prime is 12609271. The reversal of 12609251 is 15290621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12609251 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12609251.

It is not a weakly prime, because it can be changed into another prime (12609241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6304625 + 6304626.

It is an arithmetic number, because the mean of its divisors is an integer number (6304626).

Almost surely, 2^12609251 is an apocalyptic number.

12609251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12609251 is an equidigital number, since it uses as much as digits as its factorization.

12609251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12609251 is about 3550.9507177656. The cubic root of 12609251 is about 232.7536123392.

Adding to 12609251 its reverse (15290621), we get a palindrome (27899872).

The spelling of 12609251 in words is "twelve million, six hundred nine thousand, two hundred fifty-one".