204425194 has 4 divisors (see below), whose sum is σ = 306637794. Its totient is φ = 102212596.

The previous prime is 204425189. The next prime is 204425203. The reversal of 204425194 is 491524402.

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

It can be written as a sum of positive squares in only one way, i.e., 113699569 + 90725625 = 10663^2 + 9525^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106297 + ... + 51106300.

Almost surely, 2^204425194 is an apocalyptic number.

204425194 is a deficient number, since it is larger than the sum of its proper divisors (102212600).

204425194 is a wasteful number, since it uses less digits than its factorization.

204425194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102212599.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 204425194 is about 14297.7338763875. The cubic root of 204425194 is about 589.0852376202.

Adding to 204425194 its reverse (491524402), we get a palindrome (695949596).

The spelling of 204425194 in words is "two hundred four million, four hundred twenty-five thousand, one hundred ninety-four".