12605273 has 2 divisors, whose sum is σ = 12605274. Its totient is φ = 12605272.

The previous prime is 12605261. The next prime is 12605287. The reversal of 12605273 is 37250621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12306064 + 299209 = 3508^2 + 547^2 .

It is a cyclic number.

It is not a de Polignac number, because 12605273 - 2⁸ = 12605017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12601273) 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, 6302636 + 6302637.

It is an arithmetic number, because the mean of its divisors is an integer number (6302637).

Almost surely, 2^12605273 is an apocalyptic number.

It is an amenable number.

12605273 is a deficient number, since it is larger than the sum of its proper divisors (1).

12605273 is an equidigital number, since it uses as much as digits as its factorization.

12605273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 12605273 is about 3550.3905418982. The cubic root of 12605273 is about 232.7291331888.

Adding to 12605273 its reverse (37250621), we get a palindrome (49855894).

The spelling of 12605273 in words is "twelve million, six hundred five thousand, two hundred seventy-three".