12545602236225 has 60 divisors (see below), whose sum is σ = 23270071858176. Its totient is φ = 6681981690720.

The previous prime is 12545602236187. The next prime is 12545602236259. The reversal of 12545602236225 is 52263220654521.

It is a happy number.

12545602236225 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 5 + 602 + 2 + 36 + 2 + 2 + 5 = 666.

It is not a de Polignac number, because 12545602236225 - 2⁹ = 12545602235713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 2664577 + ... + 5673726.

Almost surely, 2^{12545602236225} is an apocalyptic number.

12545602236225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12545602236225 is a deficient number, since it is larger than the sum of its proper divisors (10724469621951).

12545602236225 is an equidigital number, since it uses as much as digits as its factorization.

12545602236225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8339068 (or 8339054 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 12545602236225 in words is "twelve trillion, five hundred forty-five billion, six hundred two million, two hundred thirty-six thousand, two hundred twenty-five".