256065243 has 8 divisors (see below), whose sum is σ = 390194688. Its totient is φ = 146322984.

The previous prime is 256065221. The next prime is 256065253. The reversal of 256065243 is 342560652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256065243 - 2⁵ = 256065211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256065253) 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, 6096771 + ... + 6096812.

It is an arithmetic number, because the mean of its divisors is an integer number (48774336).

Almost surely, 2^256065243 is an apocalyptic number.

256065243 is a deficient number, since it is larger than the sum of its proper divisors (134129445).

256065243 is a wasteful number, since it uses less digits than its factorization.

256065243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193593.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 256065243 is about 16002.0387138639. The cubic root of 256065243 is about 635.0143572508.

The spelling of 256065243 in words is "two hundred fifty-six million, sixty-five thousand, two hundred forty-three".