42225555 has 16 divisors (see below), whose sum is σ = 68259744. Its totient is φ = 22287360.

The previous prime is 42225553. The next prime is 42225593. The reversal of 42225555 is 55552224.

It is not a de Polignac number, because 42225555 - 2¹ = 42225553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42225553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13056 + ... + 15965.

It is an arithmetic number, because the mean of its divisors is an integer number (4266234).

Almost surely, 2^42225555 is an apocalyptic number.

42225555 is a deficient number, since it is larger than the sum of its proper divisors (26034189).

42225555 is a wasteful number, since it uses less digits than its factorization.

42225555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29126.

The product of its digits is 20000, while the sum is 30.

The square root of 42225555 is about 6498.1193433177. The cubic root of 42225555 is about 348.2238040490.

Adding to 42225555 its reverse (55552224), we get a palindrome (97777779).

The spelling of 42225555 in words is "forty-two million, two hundred twenty-five thousand, five hundred fifty-five".