320125564 has 24 divisors (see below), whose sum is σ = 611670528. Its totient is φ = 145387440.

The previous prime is 320125549. The next prime is 320125567. The reversal of 320125564 is 465521023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320125567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66627 + ... + 71269.

It is an arithmetic number, because the mean of its divisors is an integer number (25486272).

Almost surely, 2^320125564 is an apocalyptic number.

It is an amenable number.

320125564 is a deficient number, since it is larger than the sum of its proper divisors (291544964).

320125564 is a wasteful number, since it uses less digits than its factorization.

320125564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6225 (or 6223 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 320125564 is about 17892.0530962771. The cubic root of 320125564 is about 684.0798300634.

Adding to 320125564 its reverse (465521023), we get a palindrome (785646587).

The spelling of 320125564 in words is "three hundred twenty million, one hundred twenty-five thousand, five hundred sixty-four".