243337263725 has 12 divisors (see below), whose sum is σ = 301757347380. Its totient is φ = 194657462400.

The previous prime is 243337263721. The next prime is 243337263761. The reversal of 243337263725 is 527362733342.

It can be written as a sum of positive squares in 6 ways, for example, as 8938946116 + 234398317609 = 94546^2 + 484147^2 .

It is not a de Polignac number, because 243337263725 - 2² = 243337263721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243337263725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243337263721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104105 + ... + 705345.

It is an arithmetic number, because the mean of its divisors is an integer number (25146445615).

Almost surely, 2^243337263725 is an apocalyptic number.

243337263725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243337263725 is a deficient number, since it is larger than the sum of its proper divisors (58420083655).

243337263725 is a wasteful number, since it uses less digits than its factorization.

243337263725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617440 (or 617435 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 47.

The spelling of 243337263725 in words is "two hundred forty-three billion, three hundred thirty-seven million, two hundred sixty-three thousand, seven hundred twenty-five".