22255865 has 8 divisors (see below), whose sum is σ = 26794248. Its totient is φ = 17746560.

The previous prime is 22255853. The next prime is 22255889. The reversal of 22255865 is 56855222.

It can be written as a sum of positive squares in 4 ways, for example, as 90601 + 22165264 = 301^2 + 4708^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22255865 - 2⁸ = 22255609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5546 + ... + 8675.

It is an arithmetic number, because the mean of its divisors is an integer number (3349281).

Almost surely, 2^22255865 is an apocalyptic number.

It is an amenable number.

22255865 is a deficient number, since it is larger than the sum of its proper divisors (4538383).

22255865 is a wasteful number, since it uses less digits than its factorization.

22255865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14539.

The product of its digits is 48000, while the sum is 35.

The square root of 22255865 is about 4717.6122138217. The cubic root of 22255865 is about 281.2860273190.

The spelling of 22255865 in words is "twenty-two million, two hundred fifty-five thousand, eight hundred sixty-five".