16222265 has 8 divisors (see below), whose sum is σ = 19941768. Its totient is φ = 12661120.

The previous prime is 16222259. The next prime is 16222277. The reversal of 16222265 is 56222261.

It can be written as a sum of positive squares in 4 ways, for example, as 1229881 + 14992384 = 1109^2 + 3872^2 .

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

It is not a de Polignac number, because 16222265 - 2¹⁰ = 16221241 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 39362 + ... + 39771.

It is an arithmetic number, because the mean of its divisors is an integer number (2492721).

Almost surely, 2^16222265 is an apocalyptic number.

It is an amenable number.

16222265 is a deficient number, since it is larger than the sum of its proper divisors (3719503).

16222265 is an equidigital number, since it uses as much as digits as its factorization.

16222265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79179.

The product of its digits is 2880, while the sum is 26.

The square root of 16222265 is about 4027.6873016658. The cubic root of 16222265 is about 253.1456664527.

The spelling of 16222265 in words is "sixteen million, two hundred twenty-two thousand, two hundred sixty-five".