843320805625 has 45 divisors (see below), whose sum is σ = 1066735751697. Its totient is φ = 666483552000.

The previous prime is 843320805601. The next prime is 843320805713. The reversal of 843320805625 is 526508023348.

The square root of 843320805625 is 918325.

It is a perfect power (a square), and thus also a powerful number.

843320805625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 22 ways, for example, as 759524451049 + 83796354576 = 871507^2 + 289476^2 .

It is not a de Polignac number, because 843320805625 - 2⁹ = 843320805113 is a prime.

It is a super-2 number, since 2×843320805625² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2502435457 + ... + 2502435793.

Almost surely, 2^843320805625 is an apocalyptic number.

843320805625 is the 918325-th square number.

843320805625 is the 459163-rd centered octagonal number.

It is an amenable number.

843320805625 is a deficient number, since it is larger than the sum of its proper divisors (223414946072).

843320805625 is an frugal number, since it uses more digits than its factorization.

843320805625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 843320805625 in words is "eight hundred forty-three billion, three hundred twenty million, eight hundred five thousand, six hundred twenty-five".