22072565 has 8 divisors (see below), whose sum is σ = 26517408. Its totient is φ = 17637840.

The previous prime is 22072553. The next prime is 22072573. The reversal of 22072565 is 56527022.

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

It is not a de Polignac number, because 22072565 - 2¹⁸ = 21810421 is a prime.

It is a Duffinian number.

It is a congruent 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, 3650 + ... + 7580.

It is an arithmetic number, because the mean of its divisors is an integer number (3314676).

Almost surely, 2^22072565 is an apocalyptic number.

It is an amenable number.

22072565 is a deficient number, since it is larger than the sum of its proper divisors (4444843).

22072565 is a wasteful number, since it uses less digits than its factorization.

22072565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 22072565 is about 4698.1448466389. The cubic root of 22072565 is about 280.5116706983.

Adding to 22072565 its reverse (56527022), we get a palindrome (78599587).

The spelling of 22072565 in words is "twenty-two million, seventy-two thousand, five hundred sixty-five".