320045025 has 48 divisors (see below), whose sum is σ = 562464000. Its totient is φ = 160119360.

The previous prime is 320045017. The next prime is 320045053. The reversal of 320045025 is 520540023.

It is not a de Polignac number, because 320045025 - 2³ = 320045017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320044992 and 320045010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151426 + ... + 153524.

It is an arithmetic number, because the mean of its divisors is an integer number (11718000).

Almost surely, 2^320045025 is an apocalyptic number.

It is an amenable number.

320045025 is a deficient number, since it is larger than the sum of its proper divisors (242418975).

320045025 is a wasteful number, since it uses less digits than its factorization.

320045025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 320045025 is about 17889.8022627418. The cubic root of 320045025 is about 684.0224570275.

Adding to 320045025 its reverse (520540023), we get a palindrome (840585048).

The spelling of 320045025 in words is "three hundred twenty million, forty-five thousand, twenty-five".