549800005225 has 27 divisors (see below), whose sum is σ = 698978915791. Its totient is φ = 428993561600.

The previous prime is 549800005217. The next prime is 549800005247. The reversal of 549800005225 is 522500008945.

The square root of 549800005225 is 741485.

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

It can be written as a sum of positive squares in 13 ways, for example, as 356126078169 + 193673927056 = 596763^2 + 440084^2 .

It is not a de Polignac number, because 549800005225 - 2³ = 549800005217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 152002617 + ... + 152006233.

Almost surely, 2^549800005225 is an apocalyptic number.

549800005225 is the 741485-th square number.

549800005225 is the 370743-rd centered octagonal number.

It is an amenable number.

549800005225 is a deficient number, since it is larger than the sum of its proper divisors (149178910566).

549800005225 is an frugal number, since it uses more digits than its factorization.

549800005225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326 (or 3663 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 549800005225 in words is "five hundred forty-nine billion, eight hundred million, five thousand, two hundred twenty-five".