42825856 has 32 divisors (see below), whose sum is σ = 90340380. Its totient is φ = 20152320.

The previous prime is 42825847. The next prime is 42825869. The reversal of 42825856 is 65852824.

It can be written as a sum of positive squares in 2 ways, for example, as 33825856 + 9000000 = 5816^2 + 3000^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent 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, 7665 + ... + 12016.

Almost surely, 2^42825856 is an apocalyptic number.

It is an amenable number.

42825856 is an abundant number, since it is smaller than the sum of its proper divisors (47514524).

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

42825856 is a wasteful number, since it uses less digits than its factorization.

42825856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19712 (or 19700 counting only the distinct ones).

The product of its digits is 153600, while the sum is 40.

The square root of 42825856 is about 6544.1466976222. The cubic root of 42825856 is about 349.8662237047.

It can be divided in two parts, 42825 and 856, that added together give a square (43681 = 209²).

The spelling of 42825856 in words is "forty-two million, eight hundred twenty-five thousand, eight hundred fifty-six".