320504025 has 12 divisors (see below), whose sum is σ = 529900112. Its totient is φ = 170935440.

The previous prime is 320504017. The next prime is 320504033. The reversal of 320504025 is 520405023.

It is an interprime number because it is at equal distance from previous prime (320504017) and next prime (320504033).

It is not a de Polignac number, because 320504025 - 2³ = 320504017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320503992 and 320504010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2136619 + ... + 2136768.

Almost surely, 2^320504025 is an apocalyptic number.

It is an amenable number.

320504025 is a deficient number, since it is larger than the sum of its proper divisors (209396087).

320504025 is a wasteful number, since it uses less digits than its factorization.

320504025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273400 (or 4273395 counting only the distinct ones).

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

The square root of 320504025 is about 17902.6262039959. The cubic root of 320504025 is about 684.3493030530.

Adding to 320504025 its reverse (520405023), we get a palindrome (840909048).

The spelling of 320504025 in words is "three hundred twenty million, five hundred four thousand, twenty-five".