42556825 has 12 divisors (see below), whose sum is σ = 53010000. Its totient is φ = 33890960.

The previous prime is 42556823. The next prime is 42556841. The reversal of 42556825 is 52865524.

42556825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42556825 - 2¹ = 42556823 is a prime.

It is a super-2 number, since 2×42556825² = 3622166708161250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42556823) 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 11 ways as a sum of consecutive naturals, for example, 1926 + ... + 9424.

It is an arithmetic number, because the mean of its divisors is an integer number (4417500).

Almost surely, 2^42556825 is an apocalyptic number.

It is an amenable number.

42556825 is a deficient number, since it is larger than the sum of its proper divisors (10453175).

42556825 is a wasteful number, since it uses less digits than its factorization.

42556825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7736 (or 7731 counting only the distinct ones).

The product of its digits is 96000, while the sum is 37.

The square root of 42556825 is about 6523.5592279062. The cubic root of 42556825 is about 349.1320671593.

The spelling of 42556825 in words is "forty-two million, five hundred fifty-six thousand, eight hundred twenty-five".