1066447736325 has 18 divisors (see below), whose sum is σ = 1910126390354. Its totient is φ = 568772125920.

The previous prime is 1066447736293. The next prime is 1066447736327. The reversal of 1066447736325 is 5236377446601.

1066447736325 is a `hidden beast` number, since 10 + 66 + 447 + 73 + 63 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2698906401 + 1063748829924 = 51951^2 + 1031382^2 .

It is not a de Polignac number, because 1066447736325 - 2⁵ = 1066447736293 is a prime.

It is a super-2 number, since 2×1066447736325² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066447736327) 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 17 ways as a sum of consecutive naturals, for example, 2369883634 + ... + 2369884083.

Almost surely, 2^{1066447736325} is an apocalyptic number.

1066447736325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066447736325 is a deficient number, since it is larger than the sum of its proper divisors (843678654029).

1066447736325 is a wasteful number, since it uses less digits than its factorization.

1066447736325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739767733 (or 4739767725 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 54.

The spelling of 1066447736325 in words is "one trillion, sixty-six billion, four hundred forty-seven million, seven hundred thirty-six thousand, three hundred twenty-five".