18788552725 has 24 divisors (see below), whose sum is σ = 23422028672. Its totient is φ = 14950915200.

The previous prime is 18788552719. The next prime is 18788552729. The reversal of 18788552725 is 52725588781.

It is not a de Polignac number, because 18788552725 - 2⁷ = 18788552597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18788552725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18788552729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4090180 + ... + 4094770.

Almost surely, 2^18788552725 is an apocalyptic number.

It is an amenable number.

18788552725 is a deficient number, since it is larger than the sum of its proper divisors (4633475947).

18788552725 is a wasteful number, since it uses less digits than its factorization.

18788552725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5437 (or 5432 counting only the distinct ones).

The product of its digits is 12544000, while the sum is 58.

The spelling of 18788552725 in words is "eighteen billion, seven hundred eighty-eight million, five hundred fifty-two thousand, seven hundred twenty-five".