12545450225 has 24 divisors (see below), whose sum is σ = 19394943168. Its totient is φ = 7820539200.

The previous prime is 12545450219. The next prime is 12545450227. The reversal of 12545450225 is 52205454521.

12545450225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12545450225 - 2¹⁰ = 12545449201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12545450227) 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 in 23 ways as a sum of consecutive naturals, for example, 3256634 + ... + 3260483.

It is an arithmetic number, because the mean of its divisors is an integer number (808122632).

Almost surely, 2^12545450225 is an apocalyptic number.

It is an amenable number.

12545450225 is a deficient number, since it is larger than the sum of its proper divisors (6849492943).

12545450225 is a wasteful number, since it uses less digits than its factorization.

12545450225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517145 (or 6517140 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 12545450225 in words is "twelve billion, five hundred forty-five million, four hundred fifty thousand, two hundred twenty-five".