825388879 has 48 divisors (see below), whose sum is σ = 1078334208. Its totient is φ = 626427648.

The previous prime is 825388871. The next prime is 825388891. The reversal of 825388879 is 978883528.

It is not a de Polignac number, because 825388879 - 2³ = 825388871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825388871) 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 47 ways as a sum of consecutive naturals, for example, 1283332 + ... + 1283974.

It is an arithmetic number, because the mean of its divisors is an integer number (22465296).

Almost surely, 2^825388879 is an apocalyptic number.

825388879 is a deficient number, since it is larger than the sum of its proper divisors (252945329).

825388879 is a wasteful number, since it uses less digits than its factorization.

825388879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 757 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 58.

The square root of 825388879 is about 28729.5819496212. The cubic root of 825388879 is about 938.0360682648.

The spelling of 825388879 in words is "eight hundred twenty-five million, three hundred eighty-eight thousand, eight hundred seventy-nine".