825811044 has 96 divisors (see below), whose sum is σ = 2075673600. Its totient is φ = 254905728.

The previous prime is 825811043. The next prime is 825811061. The reversal of 825811044 is 440118528.

It is a junction number, because it is equal to n+sod(n) for n = 825810996 and 825811014.

It is not an unprimeable number, because it can be changed into a prime (825811043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1768099 + ... + 1768565.

It is an arithmetic number, because the mean of its divisors is an integer number (21621600).

Almost surely, 2^825811044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825811044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037836800).

825811044 is an abundant number, since it is smaller than the sum of its proper divisors (1249862556).

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

825811044 is a wasteful number, since it uses less digits than its factorization.

825811044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 825811044 is about 28736.9282283267. The cubic root of 825811044 is about 938.1959680448.

The spelling of 825811044 in words is "eight hundred twenty-five million, eight hundred eleven thousand, forty-four".