12547052225 has 6 divisors (see below), whose sum is σ = 15558344790. Its totient is φ = 10037641760.

The previous prime is 12547052197. The next prime is 12547052227. The reversal of 12547052225 is 52225074521.

It can be written as a sum of positive squares in 3 ways, for example, as 113018161 + 12434034064 = 10631^2 + 111508^2 .

It is not a de Polignac number, because 12547052225 - 2⁸ = 12547051969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12547052227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250941020 + ... + 250941069.

It is an arithmetic number, because the mean of its divisors is an integer number (2593057465).

Almost surely, 2^12547052225 is an apocalyptic number.

It is an amenable number.

12547052225 is a deficient number, since it is larger than the sum of its proper divisors (3011292565).

12547052225 is an equidigital number, since it uses as much as digits as its factorization.

12547052225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501882099 (or 501882094 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The spelling of 12547052225 in words is "twelve billion, five hundred forty-seven million, fifty-two thousand, two hundred twenty-five".