1066323501225 has 18 divisors (see below), whose sum is σ = 1909903871486. Its totient is φ = 568705867200.

The previous prime is 1066323501209. The next prime is 1066323501233. The reversal of 1066323501225 is 5221053236601.

1066323501225 is a `hidden beast` number, since 1 + 0 + 6 + 632 + 3 + 5 + 0 + 12 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 8445426201 + 1057878075024 = 91899^2 + 1028532^2 .

It is not a de Polignac number, because 1066323501225 - 2⁴ = 1066323501209 is a prime.

It is a super-2 number, since 2×1066323501225² (a number of 25 digits) contains 22 as substring.

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 1066323501225.

It is an unprimeable number.

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, 2369607556 + ... + 2369608005.

Almost surely, 2^{1066323501225} is an apocalyptic number.

1066323501225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066323501225 is a deficient number, since it is larger than the sum of its proper divisors (843580370261).

1066323501225 is a wasteful number, since it uses less digits than its factorization.

1066323501225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739215577 (or 4739215569 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 1066323501225 its reverse (5221053236601), we get a palindrome (6287376737826).

The spelling of 1066323501225 in words is "one trillion, sixty-six billion, three hundred twenty-three million, five hundred one thousand, two hundred twenty-five".