1774333225681 has 9 divisors (see below), whose sum is σ = 1777991871369. Its totient is φ = 1770682101300.

The previous prime is 1774333225667. The next prime is 1774333225703. The reversal of 1774333225681 is 1865223334771.

The square root of 1774333225681 is 1332041.

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

It is not a de Polignac number, because 1774333225681 - 2²¹ = 1774331128529 is a prime.

It is a super-2 number, since 2×1774333225681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1774333225631) 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, 840516816 + ... + 840518926.

Almost surely, 2^{1774333225681} is an apocalyptic number.

1774333225681 is the 1332041-st square number.

1774333225681 is the 666021-st centered octagonal number.

It is an amenable number.

1774333225681 is a deficient number, since it is larger than the sum of its proper divisors (3658645688).

1774333225681 is an frugal number, since it uses more digits than its factorization.

1774333225681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5484 (or 2742 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 52.

The spelling of 1774333225681 in words is "one trillion, seven hundred seventy-four billion, three hundred thirty-three million, two hundred twenty-five thousand, six hundred eighty-one".