561053805325 has 18 divisors (see below), whose sum is σ = 749240652734. Its totient is φ = 414306684480.

The previous prime is 561053805313. The next prime is 561053805439. The reversal of 561053805325 is 523508350165.

It can be written as a sum of positive squares in 9 ways, for example, as 528544994121 + 32508811204 = 727011^2 + 180302^2 .

It is not a de Polignac number, because 561053805325 - 2²⁹ = 560516934413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 13482651 + ... + 13524199.

Almost surely, 2^561053805325 is an apocalyptic number.

It is an amenable number.

561053805325 is a deficient number, since it is larger than the sum of its proper divisors (188186847409).

561053805325 is an frugal number, since it uses more digits than its factorization.

561053805325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83121 (or 41567 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 561053805325 in words is "five hundred sixty-one billion, fifty-three million, eight hundred five thousand, three hundred twenty-five".