320920925 has 24 divisors (see below), whose sum is σ = 451116960. Its totient is φ = 224510400.

The previous prime is 320920889. The next prime is 320920933. The reversal of 320920925 is 529029023.

It is a happy number.

It is not a de Polignac number, because 320920925 - 2¹² = 320916829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320920891 and 320920900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19811 + ... + 32160.

It is an arithmetic number, because the mean of its divisors is an integer number (18796540).

Almost surely, 2^320920925 is an apocalyptic number.

It is an amenable number.

320920925 is a deficient number, since it is larger than the sum of its proper divisors (130196035).

320920925 is a wasteful number, since it uses less digits than its factorization.

320920925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52013 (or 52008 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 320920925 is about 17914.2659631926. The cubic root of 320920925 is about 684.6459000654.

Adding to 320920925 its reverse (529029023), we get a palindrome (849949948).

The spelling of 320920925 in words is "three hundred twenty million, nine hundred twenty thousand, nine hundred twenty-five".