256352223 has 8 divisors (see below), whose sum is σ = 345921408. Its totient is φ = 168842264.

The previous prime is 256352221. The next prime is 256352267. The reversal of 256352223 is 322253652.

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 256352223 - 2¹ = 256352221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256352221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514515 + ... + 515012.

It is an arithmetic number, because the mean of its divisors is an integer number (43240176).

Almost surely, 2^256352223 is an apocalyptic number.

256352223 is a deficient number, since it is larger than the sum of its proper divisors (89569185).

256352223 is a wasteful number, since it uses less digits than its factorization.

256352223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029613.

The product of its digits is 21600, while the sum is 30.

The square root of 256352223 is about 16011.0031853098. The cubic root of 256352223 is about 635.2514952306.

The spelling of 256352223 in words is "two hundred fifty-six million, three hundred fifty-two thousand, two hundred twenty-three".