243044015425 has 6 divisors (see below), whose sum is σ = 301374579158. Its totient is φ = 194435212320.

The previous prime is 243044015407. The next prime is 243044015429. The reversal of 243044015425 is 524510440342.

It can be written as a sum of positive squares in 3 ways, for example, as 1396068496 + 241647946929 = 37364^2 + 491577^2 .

It is not a de Polignac number, because 243044015425 - 2⁷ = 243044015297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243044015429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4860880284 + ... + 4860880333.

Almost surely, 2^243044015425 is an apocalyptic number.

243044015425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243044015425 is a deficient number, since it is larger than the sum of its proper divisors (58330563733).

243044015425 is an equidigital number, since it uses as much as digits as its factorization.

243044015425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9721760627 (or 9721760622 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 243044015425 its reverse (524510440342), we get a palindrome (767554455767).

The spelling of 243044015425 in words is "two hundred forty-three billion, forty-four million, fifteen thousand, four hundred twenty-five".