256218059 has 8 divisors (see below), whose sum is σ = 274793040. Its totient is φ = 238152096.

The previous prime is 256218043. The next prime is 256218071. The reversal of 256218059 is 950812652.

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 256218059 - 2⁴ = 256218043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256218959) 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, 126212 + ... + 128225.

It is an arithmetic number, because the mean of its divisors is an integer number (34349130).

Almost surely, 2^256218059 is an apocalyptic number.

256218059 is a deficient number, since it is larger than the sum of its proper divisors (18574981).

256218059 is a wasteful number, since it uses less digits than its factorization.

256218059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254509.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 256218059 is about 16006.8128932652. The cubic root of 256218059 is about 635.1406545636.

The spelling of 256218059 in words is "two hundred fifty-six million, two hundred eighteen thousand, fifty-nine".