42225625 has 20 divisors (see below), whose sum is σ = 56834932. Its totient is φ = 31176000.

The previous prime is 42225593. The next prime is 42225643. The reversal of 42225625 is 52652224.

42225625 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 10 ways, for example, as 38887696 + 3337929 = 6236^2 + 1827^2 .

It is not a de Polignac number, because 42225625 - 2⁵ = 42225593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42225593 and 42225602.

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 19 ways as a sum of consecutive naturals, for example, 5527 + ... + 10723.

Almost surely, 2^42225625 is an apocalyptic number.

It is an amenable number.

42225625 is a deficient number, since it is larger than the sum of its proper divisors (14609307).

42225625 is an equidigital number, since it uses as much as digits as its factorization.

42225625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230 (or 5215 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 42225625 is about 6498.1247294893. The cubic root of 42225625 is about 348.2239964732.

Adding to 42225625 its reverse (52652224), we get a palindrome (94877849).

The spelling of 42225625 in words is "forty-two million, two hundred twenty-five thousand, six hundred twenty-five".