256475611 has 8 divisors (see below), whose sum is σ = 295424000. Its totient is φ = 218104488.

The previous prime is 256475587. The next prime is 256475621. The reversal of 256475611 is 116574652.

It is a happy number.

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

It is not a de Polignac number, because 256475611 - 2⁵ = 256475579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256475621) 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, 143361 + ... + 145138.

It is an arithmetic number, because the mean of its divisors is an integer number (36928000).

Almost surely, 2^256475611 is an apocalyptic number.

256475611 is a deficient number, since it is larger than the sum of its proper divisors (38948389).

256475611 is a wasteful number, since it uses less digits than its factorization.

256475611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288633.

The product of its digits is 50400, while the sum is 37.

The square root of 256475611 is about 16014.8559469013. The cubic root of 256475611 is about 635.3533990854.

The spelling of 256475611 in words is "two hundred fifty-six million, four hundred seventy-five thousand, six hundred eleven".