12415615545225 has 24 divisors (see below), whose sum is σ = 20528095393600. Its totient is φ = 6621356992320.

The previous prime is 12415615545161. The next prime is 12415615545239. The reversal of 12415615545225 is 52254551651421.

It is a happy number.

It is not a de Polignac number, because 12415615545225 - 2⁶ = 12415615545161 is a prime.

It is a super-3 number, since 3×12415615545225³ (a number of 40 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2162074 + ... + 5431923.

Almost surely, 2^{12415615545225} is an apocalyptic number.

12415615545225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12415615545225 is a deficient number, since it is larger than the sum of its proper divisors (8112479848375).

12415615545225 is a wasteful number, since it uses less digits than its factorization.

12415615545225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615809 (or 7615804 counting only the distinct ones).

The product of its digits is 2400000, while the sum is 48.

The spelling of 12415615545225 in words is "twelve trillion, four hundred fifteen billion, six hundred fifteen million, five hundred forty-five thousand, two hundred twenty-five".