22005265 has 8 divisors (see below), whose sum is σ = 26477568. Its totient is φ = 17556720.

The previous prime is 22005241. The next prime is 22005271. The reversal of 22005265 is 56250022.

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

It is not a de Polignac number, because 22005265 - 2¹⁵ = 21972497 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, 3831 + ... + 7660.

It is an arithmetic number, because the mean of its divisors is an integer number (3309696).

Almost surely, 2^22005265 is an apocalyptic number.

It is an amenable number.

22005265 is a deficient number, since it is larger than the sum of its proper divisors (4472303).

22005265 is a wasteful number, since it uses less digits than its factorization.

22005265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11879.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22005265 is about 4690.9769771339. The cubic root of 22005265 is about 280.2262839146.

Adding to 22005265 its reverse (56250022), we get a palindrome (78255287).

The spelling of 22005265 in words is "twenty-two million, five thousand, two hundred sixty-five".