204425111 has 16 divisors (see below), whose sum is σ = 231350688. Its totient is φ = 178992000.

The previous prime is 204425087. The next prime is 204425131. The reversal of 204425111 is 111524402.

It is a happy number.

It is not a de Polignac number, because 204425111 - 2¹⁴ = 204408727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204425131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38621 + ... + 43593.

It is an arithmetic number, because the mean of its divisors is an integer number (14459418).

Almost surely, 2^204425111 is an apocalyptic number.

204425111 is a deficient number, since it is larger than the sum of its proper divisors (26925577).

204425111 is a wasteful number, since it uses less digits than its factorization.

204425111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 204425111 is about 14297.7309738294. The cubic root of 204425111 is about 589.0851578941.

Adding to 204425111 its reverse (111524402), we get a palindrome (315949513).

The spelling of 204425111 in words is "two hundred four million, four hundred twenty-five thousand, one hundred eleven".