204451225 has 24 divisors (see below), whose sum is σ = 281276640. Its totient is φ = 146160000.

The previous prime is 204451223. The next prime is 204451241. The reversal of 204451225 is 522154402.

It is not a de Polignac number, because 204451225 - 2¹ = 204451223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 204451225.

It is not an unprimeable number, because it can be changed into a prime (204451223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9925 + ... + 22525.

It is an arithmetic number, because the mean of its divisors is an integer number (11719860).

Almost surely, 2^204451225 is an apocalyptic number.

204451225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204451225 is a deficient number, since it is larger than the sum of its proper divisors (76825415).

204451225 is a wasteful number, since it uses less digits than its factorization.

204451225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12681 (or 12676 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 204451225 is about 14298.6441664935. The cubic root of 204451225 is about 589.1102407794.

The spelling of 204451225 in words is "two hundred four million, four hundred fifty-one thousand, two hundred twenty-five".