2256220405 has 16 divisors (see below), whose sum is σ = 2734110720. Its totient is φ = 1787268672.

The previous prime is 2256220391. The next prime is 2256220411. The reversal of 2256220405 is 5040226522.

It is a cyclic number.

It is not a de Polignac number, because 2256220405 - 2⁹ = 2256219893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350506 + ... + 356884.

It is an arithmetic number, because the mean of its divisors is an integer number (170881920).

Almost surely, 2^2256220405 is an apocalyptic number.

It is an amenable number.

2256220405 is a deficient number, since it is larger than the sum of its proper divisors (477890315).

2256220405 is a wasteful number, since it uses less digits than its factorization.

2256220405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2256220405 is about 47499.6884726626. The cubic root of 2256220405 is about 1311.5771469465.

Adding to 2256220405 its reverse (5040226522), we get a palindrome (7296446927).

The spelling of 2256220405 in words is "two billion, two hundred fifty-six million, two hundred twenty thousand, four hundred five".