320425357 has 6 divisors (see below), whose sum is σ = 372739758. Its totient is φ = 274650264.

The previous prime is 320425337. The next prime is 320425361. The reversal of 320425357 is 753524023.

It can be written as a sum of positive squares in only one way, i.e., 204518601 + 115906756 = 14301^2 + 10766^2 .

It is a de Polignac number, because none of the positive numbers 2^k-320425357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320425307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3269598 + ... + 3269695.

It is an arithmetic number, because the mean of its divisors is an integer number (62123293).

Almost surely, 2^320425357 is an apocalyptic number.

It is an amenable number.

320425357 is a deficient number, since it is larger than the sum of its proper divisors (52314401).

320425357 is an equidigital number, since it uses as much as digits as its factorization.

320425357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539307 (or 6539300 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 320425357 is about 17900.4289613406. The cubic root of 320425357 is about 684.2933070882.

It can be divided in two parts, 3204 and 25357, that added together give a 4-th power (28561 = 13⁴).

The spelling of 320425357 in words is "three hundred twenty million, four hundred twenty-five thousand, three hundred fifty-seven".