4528025921 has 8 divisors (see below), whose sum is σ = 4542878184. Its totient is φ = 4513196160.

The previous prime is 4528025917. The next prime is 4528025941. The reversal of 4528025921 is 1295208254.

It can be written as a sum of positive squares in 4 ways, for example, as 164762896 + 4363263025 = 12836^2 + 66055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4528025921 - 2² = 4528025917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4528025911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 458051 + ... + 467831.

It is an arithmetic number, because the mean of its divisors is an integer number (567859773).

Almost surely, 2^4528025921 is an apocalyptic number.

It is an amenable number.

4528025921 is a deficient number, since it is larger than the sum of its proper divisors (14852263).

4528025921 is a wasteful number, since it uses less digits than its factorization.

4528025921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 4528025921 is about 67290.6079702064. The cubic root of 4528025921 is about 1654.3839245441.

The spelling of 4528025921 in words is "four billion, five hundred twenty-eight million, twenty-five thousand, nine hundred twenty-one".