18725394000 has 80 divisors (see below), whose sum is σ = 60370689600. Its totient is φ = 4993436800.

The previous prime is 18725393993. The next prime is 18725394011. The reversal of 18725394000 is 49352781.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 18725394000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554450 + ... + 1566449.

It is an arithmetic number, because the mean of its divisors is an integer number (754633620).

Almost surely, 2^18725394000 is an apocalyptic number.

18725394000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18725394000 is an abundant number, since it is smaller than the sum of its proper divisors (41645295600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18725394000 is a wasteful number, since it uses less digits than its factorization.

18725394000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120925 (or 3120909 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 18725394000 in words is "eighteen billion, seven hundred twenty-five million, three hundred ninety-four thousand".