320025425 has 12 divisors (see below), whose sum is σ = 420175116. Its totient is φ = 240960000.

The previous prime is 320025413. The next prime is 320025443. The reversal of 320025425 is 524520023.

It can be written as a sum of positive squares in 6 ways, for example, as 80656 + 319944769 = 284^2 + 17887^2 .

It is not a de Polignac number, because 320025425 - 2¹⁶ = 319959889 is a prime.

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 320025425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376076 + ... + 376925.

It is an arithmetic number, because the mean of its divisors is an integer number (35014593).

Almost surely, 2^320025425 is an apocalyptic number.

It is an amenable number.

320025425 is a deficient number, since it is larger than the sum of its proper divisors (100149691).

320025425 is a wasteful number, since it uses less digits than its factorization.

320025425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753028 (or 753023 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 320025425 is about 17889.2544562371. The cubic root of 320025425 is about 684.0084932486.

Adding to 320025425 its reverse (524520023), we get a palindrome (844545448).

The spelling of 320025425 in words is "three hundred twenty million, twenty-five thousand, four hundred twenty-five".