12545520133 has 2 divisors, whose sum is σ = 12545520134. Its totient is φ = 12545520132.

The previous prime is 12545520109. The next prime is 12545520289. The reversal of 12545520133 is 33102554521.

12545520133 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., 7598085889 + 4947434244 = 87167^2 + 70338^2 .

It is an emirp because it is prime and its reverse (33102554521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12545520133 - 2⁹ = 12545519621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12545520095 and 12545520104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12545520733) 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, 6272760066 + 6272760067.

It is an arithmetic number, because the mean of its divisors is an integer number (6272760067).

Almost surely, 2^12545520133 is an apocalyptic number.

It is an amenable number.

12545520133 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545520133 is an equidigital number, since it uses as much as digits as its factorization.

12545520133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 12545520133 in words is "twelve billion, five hundred forty-five million, five hundred twenty thousand, one hundred thirty-three".