It is a tau number, because it is divible by the number of its divisors (40).
It is an unprimeable number.
Almost surely, 25206021345040 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
5206021345040 is a wasteful number, since it uses less digits than its factorization.
5206021345040 is an evil number, because the sum of its binary digits is even.
The spelling of 5206021345040 in words is "five trillion, two hundred six billion, twenty-one million, three hundred forty-five thousand, forty".