203450225 has 48 divisors (see below), whose sum is σ = 288731520. Its totient is φ = 140851200.

The previous prime is 203450213. The next prime is 203450227. The reversal of 203450225 is 522054302.

It is not a de Polignac number, because 203450225 - 2⁸ = 203449969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203450225.

It is not an unprimeable number, because it can be changed into a prime (203450227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 773444 + ... + 773706.

It is an arithmetic number, because the mean of its divisors is an integer number (6015240).

Almost surely, 2^203450225 is an apocalyptic number.

203450225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203450225 is a deficient number, since it is larger than the sum of its proper divisors (85281295).

203450225 is a wasteful number, since it uses less digits than its factorization.

203450225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 203450225 is about 14263.5978981462. The cubic root of 203450225 is about 588.1472329793.

The spelling of 203450225 in words is "two hundred three million, four hundred fifty thousand, two hundred twenty-five".