188525020 has 72 divisors (see below), whose sum is σ = 420297696. Its totient is φ = 71018112.

The previous prime is 188525009. The next prime is 188525039. The reversal of 188525020 is 20525881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1089654 + ... + 1089826.

It is an arithmetic number, because the mean of its divisors is an integer number (5837468).

Almost surely, 2^188525020 is an apocalyptic number.

188525020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188525020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210148848).

188525020 is an abundant number, since it is smaller than the sum of its proper divisors (231772676).

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

188525020 is a wasteful number, since it uses less digits than its factorization.

188525020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 188525020 is about 13730.4413621704. The cubic root of 188525020 is about 573.3982086614.

The spelling of 188525020 in words is "one hundred eighty-eight million, five hundred twenty-five thousand, twenty".