204209425 has 24 divisors (see below), whose sum is σ = 289999296. Its totient is φ = 139736640.

The previous prime is 204209413. The next prime is 204209459. The reversal of 204209425 is 524902402.

It is not a de Polignac number, because 204209425 - 2¹³ = 204201233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204209393 and 204209402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113382 + ... + 115168.

It is an arithmetic number, because the mean of its divisors is an integer number (12083304).

Almost surely, 2^204209425 is an apocalyptic number.

204209425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204209425 is a deficient number, since it is larger than the sum of its proper divisors (85789871).

204209425 is a wasteful number, since it uses less digits than its factorization.

204209425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457 (or 2452 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 204209425 is about 14290.1863178896. The cubic root of 204209425 is about 588.8779065565.

The spelling of 204209425 in words is "two hundred four million, two hundred nine thousand, four hundred twenty-five".