198067225 has 6 divisors (see below), whose sum is σ = 245603390. Its totient is φ = 158453760.

The previous prime is 198067223. The next prime is 198067231. The reversal of 198067225 is 522760891.

It can be written as a sum of positive squares in 3 ways, for example, as 45198729 + 152868496 = 6723^2 + 12364^2 .

It is not a de Polignac number, because 198067225 - 2¹ = 198067223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198067223) by changing a digit.

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, 3961320 + ... + 3961369.

Almost surely, 2^198067225 is an apocalyptic number.

It is an amenable number.

198067225 is a deficient number, since it is larger than the sum of its proper divisors (47536165).

198067225 is an equidigital number, since it uses as much as digits as its factorization.

198067225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7922699 (or 7922694 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 198067225 is about 14073.6358131081. The cubic root of 198067225 is about 582.9136237140.

The spelling of 198067225 in words is "one hundred ninety-eight million, sixty-seven thousand, two hundred twenty-five".