528042022225 has 81 divisors (see below), whose sum is σ = 710936545233. Its totient is φ = 388980867840.

The previous prime is 528042022217. The next prime is 528042022309. The reversal of 528042022225 is 522220240825.

The square root of 528042022225 is 726665.

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 12351432769 + 515690589456 = 111137^2 + 718116^2 .

It is not a de Polignac number, because 528042022225 - 2³ = 528042022217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 5126621524 + ... + 5126621626.

Almost surely, 2^528042022225 is an apocalyptic number.

528042022225 is the 726665-th square number.

528042022225 is the 363333-rd centered octagonal number.

It is an amenable number.

528042022225 is a deficient number, since it is larger than the sum of its proper divisors (182894523008).

528042022225 is an equidigital number, since it uses as much as digits as its factorization.

528042022225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

The spelling of 528042022225 in words is "five hundred twenty-eight billion, forty-two million, twenty-two thousand, two hundred twenty-five".