204225534 has 24 divisors (see below), whose sum is σ = 443618760. Its totient is φ = 67901328.

The previous prime is 204225521. The next prime is 204225557. The reversal of 204225534 is 435522402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 204225498 and 204225507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7144 + ... + 21435.

It is an arithmetic number, because the mean of its divisors is an integer number (18484115).

Almost surely, 2^204225534 is an apocalyptic number.

204225534 is an abundant number, since it is smaller than the sum of its proper divisors (239393226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204225534 is a wasteful number, since it uses less digits than its factorization.

204225534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28984 (or 28981 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 204225534 is about 14290.7499453318. The cubic root of 204225534 is about 588.8933906358.

Adding to 204225534 its reverse (435522402), we get a palindrome (639747936).

The spelling of 204225534 in words is "two hundred four million, two hundred twenty-five thousand, five hundred thirty-four".