2221530325 has 24 divisors (see below), whose sum is σ = 3285111168. Its totient is φ = 1457100480.

The previous prime is 2221530319. The next prime is 2221530329. The reversal of 2221530325 is 5230351222.

2221530325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221530325 - 2³ = 2221530317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221530325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221530329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271942 + ... + 279991.

It is an arithmetic number, because the mean of its divisors is an integer number (136879632).

Almost surely, 2^2221530325 is an apocalyptic number.

2221530325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2221530325 is a deficient number, since it is larger than the sum of its proper divisors (1063580843).

2221530325 is a wasteful number, since it uses less digits than its factorization.

2221530325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551973 (or 551968 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2221530325 is about 47133.1128295172. The cubic root of 2221530325 is about 1304.8204320289.

Adding to 2221530325 its reverse (5230351222), we get a palindrome (7451881547).

The spelling of 2221530325 in words is "two billion, two hundred twenty-one million, five hundred thirty thousand, three hundred twenty-five".