1081444005625 has 15 divisors (see below), whose sum is σ = 1351404917467. Its totient is φ = 865134406000.

The previous prime is 1081444005527. The next prime is 1081444005667. The reversal of 1081444005625 is 5265004441801.

The square root of 1081444005625 is 1039925.

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

It can be written as a sum of positive squares in 7 ways, for example, as 968545317609 + 112898688016 = 984147^2 + 336004^2 .

It is not a de Polignac number, because 1081444005625 - 2⁷ = 1081444005497 is a prime.

It is a super-2 number, since 2×1081444005625² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 25977327 + ... + 26018923.

Almost surely, 2^{1081444005625} is an apocalyptic number.

1081444005625 is the 1039925-th square number.

1081444005625 is the 519963-rd centered octagonal number.

It is an amenable number.

1081444005625 is a deficient number, since it is larger than the sum of its proper divisors (269960911842).

1081444005625 is an frugal number, since it uses more digits than its factorization.

1081444005625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83214 (or 41602 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 1081444005625 in words is "one trillion, eighty-one billion, four hundred forty-four million, five thousand, six hundred twenty-five".