188369020225 has 27 divisors (see below), whose sum is σ = 237636495369. Its totient is φ = 148120639200.

The previous prime is 188369020219. The next prime is 188369020261. The reversal of 188369020225 is 522020963881.

The square root of 188369020225 is 434015.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 86766182721 + 101602837504 = 294561^2 + 318752^2 .

It is not a de Polignac number, because 188369020225 - 2²⁵ = 188335465793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 132373864 + ... + 132375286.

Almost surely, 2^188369020225 is an apocalyptic number.

188369020225 is the 434015-th square number.

188369020225 is the 217008-th centered octagonal number.

It is an amenable number.

188369020225 is a deficient number, since it is larger than the sum of its proper divisors (49267475144).

188369020225 is an frugal number, since it uses more digits than its factorization.

188369020225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 188369020225 in words is "one hundred eighty-eight billion, three hundred sixty-nine million, twenty thousand, two hundred twenty-five".