5194255786281 has 9 divisors (see below), whose sum is σ = 7502823789591. Its totient is φ = 3462832632672.

The previous prime is 5194255786199. The next prime is 5194255786283. The reversal of 5194255786281 is 1826875524915.

The square root of 5194255786281 is 2279091.

It is a perfect power (a square), and thus also a powerful number.

5194255786281 is a `hidden beast` number, since 5 + 1 + 9 + 425 + 5 + 78 + 62 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 253487075625 + 4940768710656 = 503475^2 + 2222784^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 5194255786281 - 2¹¹ = 5194255784233 is a prime.

It is a super-2 number, since 2×5194255786281² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5194255786283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6457425 + ... + 7217121.

Almost surely, 2^{5194255786281} is an apocalyptic number.

5194255786281 is the 2279091-st square number.

5194255786281 is the 1139546-th centered octagonal number.

It is an amenable number.

5194255786281 is a deficient number, since it is larger than the sum of its proper divisors (2308568003310).

5194255786281 is an frugal number, since it uses more digits than its factorization.

5194255786281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519400 (or 759700 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 63.

The spelling of 5194255786281 in words is "five trillion, one hundred ninety-four billion, two hundred fifty-five million, seven hundred eighty-six thousand, two hundred eighty-one".