42442625 has 16 divisors (see below), whose sum is σ = 56086992. Its totient is φ = 31955200.

The previous prime is 42442607. The next prime is 42442633. The reversal of 42442625 is 52624424.

42442625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 10452289 + 31990336 = 3233^2 + 5656^2 .

It is not a de Polignac number, because 42442625 - 2¹⁶ = 42377089 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7862 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (3505437).

Almost surely, 2^42442625 is an apocalyptic number.

It is an amenable number.

42442625 is a deficient number, since it is larger than the sum of its proper divisors (13644367).

42442625 is a wasteful number, since it uses less digits than its factorization.

42442625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20005 (or 19995 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

The square root of 42442625 is about 6514.8004574200. The cubic root of 42442625 is about 348.8194921536.

The spelling of 42442625 in words is "forty-two million, four hundred forty-two thousand, six hundred twenty-five".