22725267321 has 4 divisors (see below), whose sum is σ = 30300356432. Its totient is φ = 15150178212.

The previous prime is 22725267317. The next prime is 22725267349. The reversal of 22725267321 is 12376252722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22725267321 - 2² = 22725267317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22725267321.

It is not an unprimeable number, because it can be changed into a prime (22725267391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3787544551 + ... + 3787544556.

It is an arithmetic number, because the mean of its divisors is an integer number (7575089108).

Almost surely, 2^22725267321 is an apocalyptic number.

It is an amenable number.

22725267321 is a deficient number, since it is larger than the sum of its proper divisors (7575089111).

22725267321 is an equidigital number, since it uses as much as digits as its factorization.

22725267321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7575089110.

The product of its digits is 141120, while the sum is 39.

The spelling of 22725267321 in words is "twenty-two billion, seven hundred twenty-five million, two hundred sixty-seven thousand, three hundred twenty-one".