225032232321 has 64 divisors (see below), whose sum is σ = 371664115200. Its totient is φ = 133613238528.

The previous prime is 225032232317. The next prime is 225032232349. The reversal of 225032232321 is 123232230522.

It is not a de Polignac number, because 225032232321 - 2² = 225032232317 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225032232301) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16350775 + ... + 16364531.

It is an arithmetic number, because the mean of its divisors is an integer number (5807251800).

Almost surely, 2^225032232321 is an apocalyptic number.

It is an amenable number.

225032232321 is a deficient number, since it is larger than the sum of its proper divisors (146631882879).

225032232321 is a wasteful number, since it uses less digits than its factorization.

225032232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15415 (or 15409 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 225032232321 its reverse (123232230522), we get a palindrome (348264462843).

The spelling of 225032232321 in words is "two hundred twenty-five billion, thirty-two million, two hundred thirty-two thousand, three hundred twenty-one".