80825856 has 80 divisors (see below), whose sum is σ = 217874448. Its totient is φ = 26624000.

The previous prime is 80825831. The next prime is 80825869. The reversal of 80825856 is 65852808.

It is a congruent number.

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, 154876 + ... + 155396.

Almost surely, 2^80825856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80825856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108937224).

80825856 is an abundant number, since it is smaller than the sum of its proper divisors (137048592).

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

80825856 is a wasteful number, since it uses less digits than its factorization.

80825856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 80825856 is about 8990.3201277819. The cubic root of 80825856 is about 432.3645756408.

The spelling of 80825856 in words is "eighty million, eight hundred twenty-five thousand, eight hundred fifty-six".