42825985 has 8 divisors (see below), whose sum is σ = 51921576. Its totient is φ = 33907200.

The previous prime is 42825967. The next prime is 42825997. The reversal of 42825985 is 58952824.

It can be written as a sum of positive squares in 4 ways, for example, as 3538161 + 39287824 = 1881^2 + 6268^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42825985 - 2⁹ = 42825473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43666 + ... + 44635.

It is an arithmetic number, because the mean of its divisors is an integer number (6490197).

Almost surely, 2^42825985 is an apocalyptic number.

It is an amenable number.

42825985 is a deficient number, since it is larger than the sum of its proper divisors (9095591).

42825985 is an equidigital number, since it uses as much as digits as its factorization.

42825985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88403.

The product of its digits is 230400, while the sum is 43.

The square root of 42825985 is about 6544.1565537508. The cubic root of 42825985 is about 349.8665749933.

The spelling of 42825985 in words is "forty-two million, eight hundred twenty-five thousand, nine hundred eighty-five".