256405062223 has 8 divisors (see below), whose sum is σ = 271493350128. Its totient is φ = 241317400704.

The previous prime is 256405062217. The next prime is 256405062227. The reversal of 256405062223 is 322260504652.

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 256405062223 - 2¹⁷ = 256404931151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256405062227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883665 + ... + 1137397.

It is an arithmetic number, because the mean of its divisors is an integer number (33936668766).

Almost surely, 2^256405062223 is an apocalyptic number.

256405062223 is a deficient number, since it is larger than the sum of its proper divisors (15088287905).

256405062223 is a wasteful number, since it uses less digits than its factorization.

256405062223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313193.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 256405062223 its reverse (322260504652), we get a palindrome (578665566875).

The spelling of 256405062223 in words is "two hundred fifty-six billion, four hundred five million, sixty-two thousand, two hundred twenty-three".