243315005425 has 6 divisors (see below), whose sum is σ = 301710606758. Its totient is φ = 194652004320.

The previous prime is 243315005413. The next prime is 243315005431. The reversal of 243315005425 is 524500513342.

It can be written as a sum of positive squares in 3 ways, for example, as 39284825616 + 204030179809 = 198204^2 + 451697^2 .

It is not a de Polignac number, because 243315005425 - 2⁵ = 243315005393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4866300084 + ... + 4866300133.

Almost surely, 2^243315005425 is an apocalyptic number.

243315005425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243315005425 is a deficient number, since it is larger than the sum of its proper divisors (58395601333).

243315005425 is an equidigital number, since it uses as much as digits as its factorization.

243315005425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732600227 (or 9732600222 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 243315005425 its reverse (524500513342), we get a palindrome (767815518767).

The spelling of 243315005425 in words is "two hundred forty-three billion, three hundred fifteen million, five thousand, four hundred twenty-five".