18263916725 has 24 divisors (see below), whose sum is σ = 23896104480. Its totient is φ = 13809096000.

The previous prime is 18263916709. The next prime is 18263916761. The reversal of 18263916725 is 52761936281.

It is a happy number.

It is not a de Polignac number, because 18263916725 - 2⁴ = 18263916709 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154310 + ... + 245640.

It is an arithmetic number, because the mean of its divisors is an integer number (995671020).

Almost surely, 2^18263916725 is an apocalyptic number.

It is an amenable number.

18263916725 is a deficient number, since it is larger than the sum of its proper divisors (5632187755).

18263916725 is a wasteful number, since it uses less digits than its factorization.

18263916725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91781 (or 91776 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The spelling of 18263916725 in words is "eighteen billion, two hundred sixty-three million, nine hundred sixteen thousand, seven hundred twenty-five".