243422425 has 6 divisors (see below), whose sum is σ = 301843838. Its totient is φ = 194737920.

The previous prime is 243422401. The next prime is 243422479. The reversal of 243422425 is 524224342.

It can be written as a sum of positive squares in 3 ways, for example, as 467856 + 242954569 = 684^2 + 15587^2 .

It is not a de Polignac number, because 243422425 - 2⁵ = 243422393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243422393 and 243422402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4868424 + ... + 4868473.

Almost surely, 2^243422425 is an apocalyptic number.

243422425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243422425 is a deficient number, since it is larger than the sum of its proper divisors (58421413).

243422425 is an equidigital number, since it uses as much as digits as its factorization.

243422425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9736907 (or 9736902 counting only the distinct ones).

The product of its digits is 15360, while the sum is 28.

The square root of 243422425 is about 15602.0006729906. Note that the first 3 decimals coincide. The cubic root of 243422425 is about 624.3865340523.

Adding to 243422425 its reverse (524224342), we get a palindrome (767646767).

The spelling of 243422425 in words is "two hundred forty-three million, four hundred twenty-two thousand, four hundred twenty-five".