4520545225 has 81 divisors (see below), whose sum is σ = 6988628127. Its totient is φ = 2891642880.

The previous prime is 4520545219. The next prime is 4520545229. The reversal of 4520545225 is 5225450254.

The square root of 4520545225 is 67235.

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 4159089081 + 361456144 = 64491^2 + 19012^2 .

It is not a de Polignac number, because 4520545225 - 2³ = 4520545217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4520545229) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 40004769 + ... + 40004881.

Almost surely, 2^4520545225 is an apocalyptic number.

4520545225 is the 67235-th square number.

4520545225 is the 33618-th centered octagonal number.

It is an amenable number.

4520545225 is a deficient number, since it is larger than the sum of its proper divisors (2468082902).

4520545225 is a wasteful number, since it uses less digits than its factorization.

4520545225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 34.

The cubic root of 4520545225 is about 1653.4723599119.

Adding to 4520545225 its reverse (5225450254), we get a palindrome (9745995479).

The spelling of 4520545225 in words is "four billion, five hundred twenty million, five hundred forty-five thousand, two hundred twenty-five".