42825520 has 20 divisors (see below), whose sum is σ = 99569520. Its totient is φ = 17130176.

The previous prime is 42825509. The next prime is 42825521. The reversal of 42825520 is 2552824.

42825520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (42825521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267580 + ... + 267739.

It is an arithmetic number, because the mean of its divisors is an integer number (4978476).

Almost surely, 2^42825520 is an apocalyptic number.

42825520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42825520 is an abundant number, since it is smaller than the sum of its proper divisors (56744000).

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

42825520 is a wasteful number, since it uses less digits than its factorization.

42825520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535332 (or 535326 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 42825520 is about 6544.1210257757. The cubic root of 42825520 is about 349.8653087173.

It can be divided in two parts, 428255 and 20, that added together give a triangular number (428275 = T₉₂₅).

The spelling of 42825520 in words is "forty-two million, eight hundred twenty-five thousand, five hundred twenty".