203430425 has 48 divisors (see below), whose sum is σ = 285440064. Its totient is φ = 142560000.

The previous prime is 203430421. The next prime is 203430431. The reversal of 203430425 is 524034302.

It is not a de Polignac number, because 203430425 - 2² = 203430421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203430425.

It is not an unprimeable number, because it can be changed into a prime (203430421) 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, 1123835 + ... + 1124015.

It is an arithmetic number, because the mean of its divisors is an integer number (5946668).

Almost surely, 2^203430425 is an apocalyptic number.

203430425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203430425 is a deficient number, since it is larger than the sum of its proper divisors (82009639).

203430425 is a wasteful number, since it uses less digits than its factorization.

203430425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 203430425 is about 14262.9038067288. The cubic root of 203430425 is about 588.1281526481.

Adding to 203430425 its reverse (524034302), we get a palindrome (727464727).

The spelling of 203430425 in words is "two hundred three million, four hundred thirty thousand, four hundred twenty-five".