825784538 has 8 divisors (see below), whose sum is σ = 1238819232. Its totient is φ = 412844796.

The previous prime is 825784507. The next prime is 825784543. The reversal of 825784538 is 835487528.

It is a happy number.

825784538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4931 + ... + 40937.

It is an arithmetic number, because the mean of its divisors is an integer number (154852404).

Almost surely, 2^825784538 is an apocalyptic number.

825784538 is a deficient number, since it is larger than the sum of its proper divisors (413034694).

825784538 is a wasteful number, since it uses less digits than its factorization.

825784538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47476.

The product of its digits is 2150400, while the sum is 50.

The square root of 825784538 is about 28736.4670410265. The cubic root of 825784538 is about 938.1859302003.

The spelling of 825784538 in words is "eight hundred twenty-five million, seven hundred eighty-four thousand, five hundred thirty-eight".