425423221321 has 16 divisors (see below), whose sum is σ = 511886793600. Its totient is φ = 345389315328.

The previous prime is 425423221291. The next prime is 425423221343. The reversal of 425423221321 is 123122324524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 425423221321 - 2⁹ = 425423220809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425423221361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381921 + ... + 998353.

It is an arithmetic number, because the mean of its divisors is an integer number (31992924600).

Almost surely, 2^425423221321 is an apocalyptic number.

It is an amenable number.

425423221321 is a deficient number, since it is larger than the sum of its proper divisors (86463572279).

425423221321 is a wasteful number, since it uses less digits than its factorization.

425423221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621648.

The product of its digits is 23040, while the sum is 31.

Adding to 425423221321 its reverse (123122324524), we get a palindrome (548545545845).

The spelling of 425423221321 in words is "four hundred twenty-five billion, four hundred twenty-three million, two hundred twenty-one thousand, three hundred twenty-one".