188225855 has 4 divisors (see below), whose sum is σ = 225871032. Its totient is φ = 150580680.

The previous prime is 188225803. The next prime is 188225857. The reversal of 188225855 is 558522881.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 188225855 - 2¹⁰ = 188224831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188225857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18822581 + ... + 18822590.

It is an arithmetic number, because the mean of its divisors is an integer number (56467758).

Almost surely, 2^188225855 is an apocalyptic number.

188225855 is a deficient number, since it is larger than the sum of its proper divisors (37645177).

188225855 is an equidigital number, since it uses as much as digits as its factorization.

188225855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37645176.

The product of its digits is 256000, while the sum is 44.

The square root of 188225855 is about 13719.5428130824. The cubic root of 188225855 is about 573.0947449747.

The spelling of 188225855 in words is "one hundred eighty-eight million, two hundred twenty-five thousand, eight hundred fifty-five".