320988425 has 6 divisors (see below), whose sum is σ = 398025678. Its totient is φ = 256790720.

The previous prime is 320988377. The next prime is 320988433. The reversal of 320988425 is 524889023.

It can be written as a sum of positive squares in 3 ways, for example, as 81234169 + 239754256 = 9013^2 + 15484^2 .

It is not a de Polignac number, because 320988425 - 2⁶ = 320988361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6419744 + ... + 6419793.

It is an arithmetic number, because the mean of its divisors is an integer number (66337613).

Almost surely, 2^320988425 is an apocalyptic number.

It is an amenable number.

320988425 is a deficient number, since it is larger than the sum of its proper divisors (77037253).

320988425 is a wasteful number, since it uses less digits than its factorization.

320988425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12839547 (or 12839542 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 320988425 is about 17916.1498375069. The cubic root of 320988425 is about 684.6938977236.

The spelling of 320988425 in words is "three hundred twenty million, nine hundred eighty-eight thousand, four hundred twenty-five".