13615488780225 has 48 divisors (see below), whose sum is σ = 22916163747840. Its totient is φ = 7131131784000.

The previous prime is 13615488780203. The next prime is 13615488780233. The reversal of 13615488780225 is 52208788451631.

It is a happy number.

It is not a de Polignac number, because 13615488780225 - 2²⁴ = 13615472003009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2688000 + ... + 5869950.

It is an arithmetic number, because the mean of its divisors is an integer number (477420078080).

Almost surely, 2^{13615488780225} is an apocalyptic number.

13615488780225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13615488780225 is a deficient number, since it is larger than the sum of its proper divisors (9300674967615).

13615488780225 is a wasteful number, since it uses less digits than its factorization.

13615488780225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182990 (or 3182985 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 60.

The spelling of 13615488780225 in words is "thirteen trillion, six hundred fifteen billion, four hundred eighty-eight million, seven hundred eighty thousand, two hundred twenty-five".