256047075 has 30 divisors (see below), whose sum is σ = 474291444. Its totient is φ = 136557360.

The previous prime is 256047053. The next prime is 256047089. The reversal of 256047075 is 570740652.

It is not a de Polignac number, because 256047075 - 2⁹ = 256046563 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 61197 + ... + 65246.

Almost surely, 2^256047075 is an apocalyptic number.

256047075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256047075 is a deficient number, since it is larger than the sum of its proper divisors (218244369).

256047075 is a wasteful number, since it uses less digits than its factorization.

256047075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126465 (or 126451 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 256047075 is about 16001.4710261276. The cubic root of 256047075 is about 634.9993386647. Note that the first 3 decimals are identical.

The spelling of 256047075 in words is "two hundred fifty-six million, forty-seven thousand, seventy-five".