825872811 has 8 divisors (see below), whose sum is σ = 1101303360. Its totient is φ = 550512072.

The previous prime is 825872807. The next prime is 825872813. The reversal of 825872811 is 118278528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825872811 - 2² = 825872807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (825872813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24700 + ... + 47558.

It is an arithmetic number, because the mean of its divisors is an integer number (137662920).

Almost surely, 2^825872811 is an apocalyptic number.

825872811 is a deficient number, since it is larger than the sum of its proper divisors (275430549).

825872811 is a wasteful number, since it uses less digits than its factorization.

825872811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34905.

The product of its digits is 71680, while the sum is 42.

The square root of 825872811 is about 28738.0029055604. The cubic root of 825872811 is about 938.2193584261.

The spelling of 825872811 in words is "eight hundred twenty-five million, eight hundred seventy-two thousand, eight hundred eleven".