It is a happy number.
The square root of 27403916265625 is 5234875.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 27403916265625.
It is an unprimeable number.
Almost surely, 227403916265625 is an apocalyptic number.
27403916265625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
27403916265625 is the 5234875-th square number.
27403916265625 is the 2617438-th centered octagonal number.
It is an amenable number.
27403916265625 is an frugal number, since it uses more digits than its factorization.
27403916265625 is an evil number, because the sum of its binary digits is even.
The spelling of 27403916265625 in words is "twenty-seven trillion, four hundred three billion, nine hundred sixteen million, two hundred sixty-five thousand, six hundred twenty-five".