It is a congruent number.
It is an unprimeable number.
Almost surely, 253520321255325 is an apocalyptic number.
It is an amenable number.
53520321255325 is a wasteful number, since it uses less digits than its factorization.
53520321255325 is an evil number, because the sum of its binary digits is even.
The spelling of 53520321255325 in words is "fifty-three trillion, five hundred twenty billion, three hundred twenty-one million, two hundred fifty-five thousand, three hundred twenty-five".