825855820 has 24 divisors (see below), whose sum is σ = 1762730928. Its totient is φ = 324926400.

The previous prime is 825855817. The next prime is 825855827. The reversal of 825855820 is 28558528.

825855820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (825855827) 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, 337246 + ... + 339685.

It is an arithmetic number, because the mean of its divisors is an integer number (73447122).

Almost surely, 2^825855820 is an apocalyptic number.

It is an amenable number.

825855820 is an abundant number, since it is smaller than the sum of its proper divisors (936875108).

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

825855820 is a wasteful number, since it uses less digits than its factorization.

825855820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677001 (or 676999 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 43.

The square root of 825855820 is about 28737.7072850288. The cubic root of 825855820 is about 938.2129242656.

The spelling of 825855820 in words is "eight hundred twenty-five million, eight hundred fifty-five thousand, eight hundred twenty".