528310225 has 9 divisors (see below), whose sum is σ = 655247217. Its totient is φ = 422556240.

The previous prime is 528310187. The next prime is 528310231. The reversal of 528310225 is 522013825.

The square root of 528310225 is 22985.

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

It can be written as a sum of positive squares in 4 ways, for example, as 196196049 + 332114176 = 14007^2 + 18224^2 .

It is not a de Polignac number, because 528310225 - 2¹¹ = 528308177 is a prime.

It is a super-2 number, since 2×528310225² = 558223387679101250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 528310193 and 528310202.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 112627 + ... + 117223.

Almost surely, 2^528310225 is an apocalyptic number.

528310225 is the 22985-th square number.

528310225 is the 11493-rd centered octagonal number.

It is an amenable number.

528310225 is a deficient number, since it is larger than the sum of its proper divisors (126936992).

528310225 is an frugal number, since it uses more digits than its factorization.

528310225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9204 (or 4602 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The cubic root of 528310225 is about 808.4062677899.

The spelling of 528310225 in words is "five hundred twenty-eight million, three hundred ten thousand, two hundred twenty-five".