256205422 has 16 divisors (see below), whose sum is σ = 419526144. Its totient is φ = 116379000.

The previous prime is 256205407. The next prime is 256205449. The reversal of 256205422 is 224502652.

It is a congruent 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, 41347 + ... + 47137.

It is an arithmetic number, because the mean of its divisors is an integer number (26220384).

Almost surely, 2^256205422 is an apocalyptic number.

256205422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256205422 is a deficient number, since it is larger than the sum of its proper divisors (163320722).

256205422 is a wasteful number, since it uses less digits than its factorization.

256205422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7815.

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

The square root of 256205422 is about 16006.4181502296. The cubic root of 256205422 is about 635.1302124108.

The spelling of 256205422 in words is "two hundred fifty-six million, two hundred five thousand, four hundred twenty-two".