256223516 has 12 divisors (see below), whose sum is σ = 451922688. Its totient is φ = 127102752.

The previous prime is 256223467. The next prime is 256223537. The reversal of 256223516 is 615322652.

256223516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251681 + ... + 252696.

It is an arithmetic number, because the mean of its divisors is an integer number (37660224).

Almost surely, 2^256223516 is an apocalyptic number.

It is an amenable number.

256223516 is a deficient number, since it is larger than the sum of its proper divisors (195699172).

256223516 is a wasteful number, since it uses less digits than its factorization.

256223516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504508 (or 504506 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 256223516 is about 16006.9833510253. The cubic root of 256223516 is about 635.1451636628.

The spelling of 256223516 in words is "two hundred fifty-six million, two hundred twenty-three thousand, five hundred sixteen".