243325025 has 6 divisors (see below), whose sum is σ = 301723062. Its totient is φ = 194660000.

The previous prime is 243325013. The next prime is 243325057. The reversal of 243325025 is 520523342.

It can be written as a sum of positive squares in 3 ways, for example, as 39891856 + 203433169 = 6316^2 + 14263^2 .

It is not a de Polignac number, because 243325025 - 2⁴ = 243325009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243324985 and 243325003.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4866476 + ... + 4866525.

It is an arithmetic number, because the mean of its divisors is an integer number (50287177).

Almost surely, 2^243325025 is an apocalyptic number.

243325025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243325025 is a deficient number, since it is larger than the sum of its proper divisors (58398037).

243325025 is an equidigital number, since it uses as much as digits as its factorization.

243325025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9733011 (or 9733006 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 243325025 is about 15598.8789661309. The cubic root of 243325025 is about 624.3032448736.

Adding to 243325025 its reverse (520523342), we get a palindrome (763848367).

The spelling of 243325025 in words is "two hundred forty-three million, three hundred twenty-five thousand, twenty-five".