It is a happy number.
256532574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2256532574 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
256532574 is a wasteful number, since it uses less digits than its factorization.
256532574 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13151.
The square root of 256532574 is about 16016.6342906367. The cubic root of 256532574 is about 635.4004327410.
The spelling of 256532574 in words is "two hundred fifty-six million, five hundred thirty-two thousand, five hundred seventy-four".