825542842 has 16 divisors (see below), whose sum is σ = 1244331072. Its totient is φ = 410771200.

The previous prime is 825542833. The next prime is 825542867. The reversal of 825542842 is 248245528.

It is a junction number, because it is equal to n+sod(n) for n = 825542795 and 825542804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514842 + ... + 516442.

It is an arithmetic number, because the mean of its divisors is an integer number (77770692).

Almost surely, 2^825542842 is an apocalyptic number.

825542842 is a deficient number, since it is larger than the sum of its proper divisors (418788230).

825542842 is a wasteful number, since it uses less digits than its factorization.

825542842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693.

The product of its digits is 204800, while the sum is 40.

The square root of 825542842 is about 28732.2613450456. The cubic root of 825542842 is about 938.0943898115.

The spelling of 825542842 in words is "eight hundred twenty-five million, five hundred forty-two thousand, eight hundred forty-two".