320453125 has 14 divisors (see below), whose sum is σ = 400580810. Its totient is φ = 256350000.

The previous prime is 320453113. The next prime is 320453129. The reversal of 320453125 is 521354023.

It can be written as a sum of positive squares in 7 ways, for example, as 308845476 + 11607649 = 17574^2 + 3407^2 .

It is not a de Polignac number, because 320453125 - 2¹¹ = 320451077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 320453125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320453129) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 5371 + ... + 25879.

It is an arithmetic number, because the mean of its divisors is an integer number (28612915).

Almost surely, 2^320453125 is an apocalyptic number.

It is an amenable number.

320453125 is a deficient number, since it is larger than the sum of its proper divisors (80127685).

320453125 is an frugal number, since it uses more digits than its factorization.

320453125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20539 (or 20514 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 320453125 is about 17901.2045684082. The cubic root of 320453125 is about 684.3130734262.

The spelling of 320453125 in words is "three hundred twenty million, four hundred fifty-three thousand, one hundred twenty-five".