188123225 has 6 divisors (see below), whose sum is σ = 233272830. Its totient is φ = 150498560.

The previous prime is 188123219. The next prime is 188123239. The reversal of 188123225 is 522321881.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1336336 + 186786889 = 1156^2 + 13667^2 .

It is not a de Polignac number, because 188123225 - 2¹⁸ = 187861081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188123191 and 188123200.

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 5 ways as a sum of consecutive naturals, for example, 3762440 + ... + 3762489.

It is an arithmetic number, because the mean of its divisors is an integer number (38878805).

Almost surely, 2^188123225 is an apocalyptic number.

It is an amenable number.

188123225 is a deficient number, since it is larger than the sum of its proper divisors (45149605).

188123225 is an equidigital number, since it uses as much as digits as its factorization.

188123225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524939 (or 7524934 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 188123225 is about 13715.8020181104. The cubic root of 188123225 is about 572.9905662176.

The spelling of 188123225 in words is "one hundred eighty-eight million, one hundred twenty-three thousand, two hundred twenty-five".