320125345 has 16 divisors (see below), whose sum is σ = 398034000. Its totient is φ = 246873088.

The previous prime is 320125343. The next prime is 320125363. The reversal of 320125345 is 543521023.

It can be written as a sum of positive squares in 8 ways, for example, as 61591104 + 258534241 = 7848^2 + 16079^2 .

It is a cyclic number.

It is not a de Polignac number, because 320125345 - 2¹ = 320125343 is a prime.

It is a super-2 number, since 2×320125345² = 204960473022738050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320125343) 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 15 ways as a sum of consecutive naturals, for example, 115941 + ... + 118669.

It is an arithmetic number, because the mean of its divisors is an integer number (24877125).

Almost surely, 2^320125345 is an apocalyptic number.

It is an amenable number.

320125345 is a deficient number, since it is larger than the sum of its proper divisors (77908655).

320125345 is a wasteful number, since it uses less digits than its factorization.

320125345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572.

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

The square root of 320125345 is about 17892.0469762406. The cubic root of 320125345 is about 684.0796740689.

Adding to 320125345 its reverse (543521023), we get a palindrome (863646368).

The spelling of 320125345 in words is "three hundred twenty million, one hundred twenty-five thousand, three hundred forty-five".