320065625 has 24 divisors (see below), whose sum is σ = 436472064. Its totient is φ = 232750000.

The previous prime is 320065601. The next prime is 320065643. The reversal of 320065625 is 526560023.

It is a happy number.

It is not a de Polignac number, because 320065625 - 2⁶ = 320065561 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 29720 + ... + 39030.

It is an arithmetic number, because the mean of its divisors is an integer number (18186336).

Almost surely, 2^320065625 is an apocalyptic number.

It is an amenable number.

320065625 is a deficient number, since it is larger than the sum of its proper divisors (116406439).

320065625 is an frugal number, since it uses more digits than its factorization.

320065625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347 (or 9327 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 320065625 is about 17890.3780004784. The cubic root of 320065625 is about 684.0371326295.

The spelling of 320065625 in words is "three hundred twenty million, sixty-five thousand, six hundred twenty-five".