204643625 has 16 divisors (see below), whose sum is σ = 256638720. Its totient is φ = 162918000.

The previous prime is 204643583. The next prime is 204643639. The reversal of 204643625 is 526346402.

It is not a de Polignac number, because 204643625 - 2¹⁰ = 204642601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204643591 and 204643600.

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 15 ways as a sum of consecutive naturals, for example, 22496 + ... + 30254.

It is an arithmetic number, because the mean of its divisors is an integer number (16039920).

Almost surely, 2^204643625 is an apocalyptic number.

204643625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204643625 is a deficient number, since it is larger than the sum of its proper divisors (51995095).

204643625 is an equidigital number, since it uses as much as digits as its factorization.

204643625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985 (or 7975 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 204643625 is about 14305.3704950274. The cubic root of 204643625 is about 589.2949780344.

The spelling of 204643625 in words is "two hundred four million, six hundred forty-three thousand, six hundred twenty-five".