42228625 has 16 divisors (see below), whose sum is σ = 52927056. Its totient is φ = 33638400.

The previous prime is 42228587. The next prime is 42228679. The reversal of 42228625 is 52682224.

It can be written as a sum of positive squares in 8 ways, for example, as 1281424 + 40947201 = 1132^2 + 6399^2 .

It is not a de Polignac number, because 42228625 - 2⁷ = 42228497 is a prime.

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 36049 + ... + 37201.

It is an arithmetic number, because the mean of its divisors is an integer number (3307941).

Almost surely, 2^42228625 is an apocalyptic number.

It is an amenable number.

42228625 is a deficient number, since it is larger than the sum of its proper divisors (10698431).

42228625 is a wasteful number, since it uses less digits than its factorization.

42228625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461 (or 1451 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 42228625 is about 6498.3555612170. The cubic root of 42228625 is about 348.2322430237.

The spelling of 42228625 in words is "forty-two million, two hundred twenty-eight thousand, six hundred twenty-five".