811125822 has 32 divisors (see below), whose sum is σ = 1748684448. Its totient is φ = 249342336.

The previous prime is 811125817. The next prime is 811125823. The reversal of 811125822 is 228521118.

It is a self number, because there is not a number n which added to its sum of digits gives 811125822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811125823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90328 + ... + 98900.

It is an arithmetic number, because the mean of its divisors is an integer number (54646389).

Almost surely, 2^811125822 is an apocalyptic number.

811125822 is an abundant number, since it is smaller than the sum of its proper divisors (937558626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811125822 is a wasteful number, since it uses less digits than its factorization.

811125822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9804.

The product of its digits is 2560, while the sum is 30.

The square root of 811125822 is about 28480.2707501175. The cubic root of 811125822 is about 932.6014272489.

It can be divided in two parts, 8111 and 25822, that added together give a palindrome (33933).

The spelling of 811125822 in words is "eight hundred eleven million, one hundred twenty-five thousand, eight hundred twenty-two".