320554130625 has 45 divisors (see below), whose sum is σ = 578669737503. Its totient is φ = 170939556000.

The previous prime is 320554130557. The next prime is 320554130629. The reversal of 320554130625 is 526031455023.

The square root of 320554130625 is 566175.

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

320554130625 is a `hidden beast` number, since 3 + 20 + 5 + 5 + 4 + 1 + 3 + 0 + 625 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 133400988081 + 187153142544 = 365241^2 + 432612^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 320554130625 - 2⁷ = 320554130497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320554130625.

It is not an unprimeable number, because it can be changed into a prime (320554130629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 42459351 + ... + 42466899.

Almost surely, 2^320554130625 is an apocalyptic number.

320554130625 is the 566175-th square number.

320554130625 is the 283088-th centered octagonal number.

It is an amenable number.

320554130625 is a deficient number, since it is larger than the sum of its proper divisors (258115606878).

320554130625 is an frugal number, since it uses more digits than its factorization.

320554130625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15124 (or 7557 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Multiplying 320554130625 by its sum of digits (36), we get a square (11539948702500 = 3397050²).

Adding to 320554130625 its reverse (526031455023), we get a palindrome (846585585648).

The spelling of 320554130625 in words is "three hundred twenty billion, five hundred fifty-four million, one hundred thirty thousand, six hundred twenty-five".