42225765 has 16 divisors (see below), whose sum is σ = 67644096. Its totient is φ = 22492800.

The previous prime is 42225709. The next prime is 42225779. The reversal of 42225765 is 56752224.

It is a de Polignac number, because none of the positive numbers 2^k-42225765 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18750 + ... + 20880.

It is an arithmetic number, because the mean of its divisors is an integer number (4227756).

Almost surely, 2^42225765 is an apocalyptic number.

It is an amenable number.

42225765 is a deficient number, since it is larger than the sum of its proper divisors (25418331).

42225765 is a wasteful number, since it uses less digits than its factorization.

42225765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460.

The product of its digits is 33600, while the sum is 33.

The square root of 42225765 is about 6498.1355018190. The cubic root of 42225765 is about 348.2243813209.

Adding to 42225765 its reverse (56752224), we get a palindrome (98977989).

The spelling of 42225765 in words is "forty-two million, two hundred twenty-five thousand, seven hundred sixty-five".