40222265 has 4 divisors (see below), whose sum is σ = 48266724. Its totient is φ = 32177808.

The previous prime is 40222253. The next prime is 40222319. The reversal of 40222265 is 56222204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6431296 + 33790969 = 2536^2 + 5813^2 .

It is a cyclic number.

It is not a de Polignac number, because 40222265 - 2⁴ = 40222249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40222265.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022222 + ... + 4022231.

It is an arithmetic number, because the mean of its divisors is an integer number (12066681).

Almost surely, 2^40222265 is an apocalyptic number.

It is an amenable number.

40222265 is a deficient number, since it is larger than the sum of its proper divisors (8044459).

40222265 is an equidigital number, since it uses as much as digits as its factorization.

40222265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044458.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40222265 is about 6342.1025693377. The cubic root of 40222265 is about 342.6274660089.

Adding to 40222265 its reverse (56222204), we get a palindrome (96444469).

The spelling of 40222265 in words is "forty million, two hundred twenty-two thousand, two hundred sixty-five".