22156265 has 8 divisors (see below), whose sum is σ = 26665800. Its totient is φ = 17672832.

The previous prime is 22156247. The next prime is 22156271. The reversal of 22156265 is 56265122.

It can be written as a sum of positive squares in 4 ways, for example, as 1752976 + 20403289 = 1324^2 + 4517^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22156265 - 2⁶ = 22156201 is a prime.

It is a Curzon 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, 4604 + ... + 8093.

It is an arithmetic number, because the mean of its divisors is an integer number (3333225).

Almost surely, 2^22156265 is an apocalyptic number.

It is an amenable number.

22156265 is a deficient number, since it is larger than the sum of its proper divisors (4509535).

22156265 is a wasteful number, since it uses less digits than its factorization.

22156265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13051.

The product of its digits is 7200, while the sum is 29.

The square root of 22156265 is about 4707.0441892976. The cubic root of 22156265 is about 280.8657937415.

The spelling of 22156265 in words is "twenty-two million, one hundred fifty-six thousand, two hundred sixty-five".