204890825 has 12 divisors (see below), whose sum is σ = 254246748. Its totient is φ = 163795200.

The previous prime is 204890801. The next prime is 204890909. The reversal of 204890825 is 528098402.

It can be written as a sum of positive squares in 6 ways, for example, as 6869641 + 198021184 = 2621^2 + 14072^2 .

It is not a de Polignac number, because 204890825 - 2¹² = 204886729 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 55229 + ... + 58821.

It is an arithmetic number, because the mean of its divisors is an integer number (21187229).

Almost surely, 2^204890825 is an apocalyptic number.

204890825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204890825 is a deficient number, since it is larger than the sum of its proper divisors (49355923).

204890825 is a wasteful number, since it uses less digits than its factorization.

204890825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5884 (or 5879 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 204890825 is about 14314.0079991594. The cubic root of 204890825 is about 589.5321628840.

The spelling of 204890825 in words is "two hundred four million, eight hundred ninety thousand, eight hundred twenty-five".