243425 has 24 divisors (see below), whose sum is σ = 374976. Its totient is φ = 152640.

The previous prime is 243421. The next prime is 243431. The reversal of 243425 is 524342.

It is not a de Polignac number, because 243425 - 2² = 243421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243397 and 243406.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243425.

It is not an unprimeable number, because it can be changed into a prime (243421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2222 + ... + 2328.

It is an arithmetic number, because the mean of its divisors is an integer number (15624).

2²⁴³⁴²⁵ is an apocalyptic number.

243425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243425 is a deficient number, since it is larger than the sum of its proper divisors (131551).

243425 is a wasteful number, since it uses less digits than its factorization.

243425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 132 counting only the distinct ones).

The product of its digits is 960, while the sum is 20.

The square root of 243425 is about 493.3811913724. The cubic root of 243425 is about 62.4388735698.

Adding to 243425 its reverse (524342), we get a palindrome (767767).

The spelling of 243425 in words is "two hundred forty-three thousand, four hundred twenty-five".