18825706937500 has 42 divisors (see below), whose sum is σ = 41180706942704. Its totient is φ = 7530282750000.

The previous prime is 18825706937491. The next prime is 18825706937503. The reversal of 18825706937500 is 573960752881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825706937503) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 150543156 + ... + 150668155.

Almost surely, 2^{18825706937500} is an apocalyptic number.

18825706937500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18825706937500 is an abundant number, since it is smaller than the sum of its proper divisors (22355000005204).

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

18825706937500 is an frugal number, since it uses more digits than its factorization.

18825706937500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301211345 (or 301211318 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 18825706937500 in words is "eighteen trillion, eight hundred twenty-five billion, seven hundred six million, nine hundred thirty-seven thousand, five hundred".