256578755 has 8 divisors (see below), whose sum is σ = 324099600. Its totient is φ = 194459616.

The previous prime is 256578733. The next prime is 256578761. The reversal of 256578755 is 557875652.

It is a happy number.

256578755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 256578755 - 2⁶ = 256578691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350320 + ... + 1350509.

It is an arithmetic number, because the mean of its divisors is an integer number (40512450).

Almost surely, 2^256578755 is an apocalyptic number.

256578755 is a deficient number, since it is larger than the sum of its proper divisors (67520845).

256578755 is a wasteful number, since it uses less digits than its factorization.

256578755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700853.

The product of its digits is 2940000, while the sum is 50.

The square root of 256578755 is about 16018.0758832015. The cubic root of 256578755 is about 635.4385587202.

The spelling of 256578755 in words is "two hundred fifty-six million, five hundred seventy-eight thousand, seven hundred fifty-five".