320725252 has 12 divisors (see below), whose sum is σ = 564845260. Its totient is φ = 159340896.

The previous prime is 320725243. The next prime is 320725253. The reversal of 320725252 is 252527023.

It can be written as a sum of positive squares in 2 ways, for example, as 115261696 + 205463556 = 10736^2 + 14334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 320725252.

It is not an unprimeable number, because it can be changed into a prime (320725253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254727 + ... + 255982.

Almost surely, 2^320725252 is an apocalyptic number.

It is an amenable number.

320725252 is a deficient number, since it is larger than the sum of its proper divisors (244120008).

320725252 is a wasteful number, since it uses less digits than its factorization.

320725252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510870 (or 510868 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 320725252 is about 17908.8037568119. The cubic root of 320725252 is about 684.5067235648.

The spelling of 320725252 in words is "three hundred twenty million, seven hundred twenty-five thousand, two hundred fifty-two".