188225425 has 6 divisors (see below), whose sum is σ = 233399558. Its totient is φ = 150580320.

The previous prime is 188225413. The next prime is 188225431. The reversal of 188225425 is 524522881.

It can be written as a sum of positive squares in 3 ways, for example, as 57168721 + 131056704 = 7561^2 + 11448^2 .

It is not a de Polignac number, because 188225425 - 2¹⁷ = 188094353 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 3764484 + ... + 3764533.

Almost surely, 2^188225425 is an apocalyptic number.

It is an amenable number.

188225425 is a deficient number, since it is larger than the sum of its proper divisors (45174133).

188225425 is an equidigital number, since it uses as much as digits as its factorization.

188225425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529027 (or 7529022 counting only the distinct ones).

The product of its digits is 51200, while the sum is 37.

The square root of 188225425 is about 13719.5271419973. The cubic root of 188225425 is about 573.0943085647.

The spelling of 188225425 in words is "one hundred eighty-eight million, two hundred twenty-five thousand, four hundred twenty-five".