825919842 has 32 divisors (see below), whose sum is σ = 1804461120. Its totient is φ = 249937920.

The previous prime is 825919837. The next prime is 825919889. The reversal of 825919842 is 248919528.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 825919791 and 825919800.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42618 + ... + 58890.

It is an arithmetic number, because the mean of its divisors is an integer number (56389410).

Almost surely, 2^825919842 is an apocalyptic number.

825919842 is an abundant number, since it is smaller than the sum of its proper divisors (978541278).

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

825919842 is a wasteful number, since it uses less digits than its factorization.

825919842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17058.

The product of its digits is 414720, while the sum is 48.

The square root of 825919842 is about 28738.8211658029. The cubic root of 825919842 is about 938.2371676886.

The spelling of 825919842 in words is "eight hundred twenty-five million, nine hundred nineteen thousand, eight hundred forty-two".