256159322 has 4 divisors (see below), whose sum is σ = 384238986. Its totient is φ = 128079660.

The previous prime is 256159271. The next prime is 256159327. The reversal of 256159322 is 223951652.

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

It can be written as a sum of positive squares in only one way, i.e., 250873921 + 5285401 = 15839^2 + 2299^2 .

It is not an unprimeable number, because it can be changed into a prime (256159327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64039829 + ... + 64039832.

Almost surely, 2^256159322 is an apocalyptic number.

256159322 is a deficient number, since it is larger than the sum of its proper divisors (128079664).

256159322 is a wasteful number, since it uses less digits than its factorization.

256159322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128079663.

The product of its digits is 32400, while the sum is 35.

The square root of 256159322 is about 16004.9780380980. The cubic root of 256159322 is about 635.0921163407.

The spelling of 256159322 in words is "two hundred fifty-six million, one hundred fifty-nine thousand, three hundred twenty-two".