12550212569 has 2 divisors, whose sum is σ = 12550212570. Its totient is φ = 12550212568.

The previous prime is 12550212551. The next prime is 12550212601. The reversal of 12550212569 is 96521205521.

12550212569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12496556944 + 53655625 = 111788^2 + 7325^2 .

It is a cyclic number.

It is not a de Polignac number, because 12550212569 - 2¹⁶ = 12550147033 is a prime.

It is a super-2 number, since 2×12550212569² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12550242569) 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, 6275106284 + 6275106285.

It is an arithmetic number, because the mean of its divisors is an integer number (6275106285).

Almost surely, 2^12550212569 is an apocalyptic number.

It is an amenable number.

12550212569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12550212569 is an equidigital number, since it uses as much as digits as its factorization.

12550212569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 12550212569 in words is "twelve billion, five hundred fifty million, two hundred twelve thousand, five hundred sixty-nine".