1321222325 has 12 divisors (see below), whose sum is σ = 1691165568. Its totient is φ = 1022881200.

The previous prime is 1321222321. The next prime is 1321222349. The reversal of 1321222325 is 5232221231.

It is not a de Polignac number, because 1321222325 - 2² = 1321222321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321222325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321222321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 851627 + ... + 853176.

It is an arithmetic number, because the mean of its divisors is an integer number (140930464).

Almost surely, 2^1321222325 is an apocalyptic number.

It is an amenable number.

1321222325 is a deficient number, since it is larger than the sum of its proper divisors (369943243).

1321222325 is a wasteful number, since it uses less digits than its factorization.

1321222325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704844 (or 1704839 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 1321222325 is about 36348.6220509114. The cubic root of 1321222325 is about 1097.2998028025.

Adding to 1321222325 its reverse (5232221231), we get a palindrome (6553443556).

The spelling of 1321222325 in words is "one billion, three hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-five".