4525303221 has 16 divisors (see below), whose sum is σ = 6786923520. Its totient is φ = 3016867356.

The previous prime is 4525303157. The next prime is 4525303229. The reversal of 4525303221 is 1223035254.

It is a happy number.

It is not a de Polignac number, because 4525303221 - 2⁶ = 4525303157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4525303229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032405 + ... + 1036778.

It is an arithmetic number, because the mean of its divisors is an integer number (424182720).

Almost surely, 2^4525303221 is an apocalyptic number.

It is an amenable number.

4525303221 is a deficient number, since it is larger than the sum of its proper divisors (2261620299).

4525303221 is an frugal number, since it uses more digits than its factorization.

4525303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069204 (or 2069186 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 4525303221 is about 67270.3740215557. The cubic root of 4525303221 is about 1654.0522646169.

Adding to 4525303221 its reverse (1223035254), we get a palindrome (5748338475).

The spelling of 4525303221 in words is "four billion, five hundred twenty-five million, three hundred three thousand, two hundred twenty-one".