188125 has 20 divisors (see below), whose sum is σ = 274912. Its totient is φ = 126000.

The previous prime is 188107. The next prime is 188137. The reversal of 188125 is 521881.

It is a de Polignac number, because none of the positive numbers 2^k-188125 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 188125.

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 19 ways as a sum of consecutive naturals, for example, 4354 + ... + 4396.

2¹⁸⁸¹²⁵ is an apocalyptic number.

It is an amenable number.

188125 is a deficient number, since it is larger than the sum of its proper divisors (86787).

188125 is an frugal number, since it uses more digits than its factorization.

188125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 55 counting only the distinct ones).

The product of its digits is 640, while the sum is 25.

The square root of 188125 is about 433.7337893224. The cubic root of 188125 is about 57.2992368326.

It can be divided in two parts, 188 and 125, that added together give a palindrome (313).

The spelling of 188125 in words is "one hundred eighty-eight thousand, one hundred twenty-five".