843031225 has 9 divisors (see below), whose sum is σ = 1045538767. Its totient is φ = 674308840.

The previous prime is 843031223. The next prime is 843031253. The reversal of 843031225 is 522130348.

The square root of 843031225 is 29035.

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

It can be written as a sum of positive squares in only one way, i.e., 303491241 + 539539984 = 17421^2 + 23228^2 .

It is not a de Polignac number, because 843031225 - 2¹ = 843031223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 843031193 and 843031202.

It is not an unprimeable number, because it can be changed into a prime (843031223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 142272 + ... + 148078.

Almost surely, 2^843031225 is an apocalyptic number.

843031225 is the 29035-th square number.

843031225 is the 14518-th centered octagonal number.

It is an amenable number.

843031225 is a deficient number, since it is larger than the sum of its proper divisors (202507542).

843031225 is an frugal number, since it uses more digits than its factorization.

843031225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11624 (or 5812 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The cubic root of 843031225 is about 944.6723853385.

The spelling of 843031225 in words is "eight hundred forty-three million, thirty-one thousand, two hundred twenty-five".