812583265 has 12 divisors (see below), whose sum is σ = 1055878524. Its totient is φ = 600060864.

The previous prime is 812583263. The next prime is 812583281. The reversal of 812583265 is 562385218.

It can be written as a sum of positive squares in 6 ways, for example, as 120209296 + 692373969 = 10964^2 + 26313^2 .

It is not a de Polignac number, because 812583265 - 2¹ = 812583263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812583263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479974 + ... + 481663.

It is an arithmetic number, because the mean of its divisors is an integer number (87989877).

Almost surely, 2^812583265 is an apocalyptic number.

It is an amenable number.

812583265 is a deficient number, since it is larger than the sum of its proper divisors (243295259).

812583265 is a wasteful number, since it uses less digits than its factorization.

812583265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961668 (or 961655 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 812583265 is about 28505.8461547803. The cubic root of 812583265 is about 933.1596637608.

The spelling of 812583265 in words is "eight hundred twelve million, five hundred eighty-three thousand, two hundred sixty-five".