12548527309 has 2 divisors, whose sum is σ = 12548527310. Its totient is φ = 12548527308.

The previous prime is 12548527301. The next prime is 12548527423. The reversal of 12548527309 is 90372584521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11295013284 + 1253514025 = 106278^2 + 35405^2 .

It is an emirp because it is prime and its reverse (90372584521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12548527309 - 2³ = 12548527301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12548527301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6274263654 + 6274263655.

It is an arithmetic number, because the mean of its divisors is an integer number (6274263655).

Almost surely, 2^12548527309 is an apocalyptic number.

It is an amenable number.

12548527309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12548527309 is an equidigital number, since it uses as much as digits as its factorization.

12548527309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 12548527309 in words is "twelve billion, five hundred forty-eight million, five hundred twenty-seven thousand, three hundred nine".