12548729 has 2 divisors, whose sum is σ = 12548730. Its totient is φ = 12548728.

The previous prime is 12548719. The next prime is 12548749. The reversal of 12548729 is 92784521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7166329 + 5382400 = 2677^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 12548729 - 2⁴ = 12548713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12548692 and 12548701.

It is not a weakly prime, because it can be changed into another prime (12548719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6274364 + 6274365.

It is an arithmetic number, because the mean of its divisors is an integer number (6274365).

Almost surely, 2^12548729 is an apocalyptic number.

It is an amenable number.

12548729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12548729 is an equidigital number, since it uses as much as digits as its factorization.

12548729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 12548729 is about 3542.4185241160. The cubic root of 12548729 is about 232.3806239604.

The spelling of 12548729 in words is "twelve million, five hundred forty-eight thousand, seven hundred twenty-nine".