320425919 has 8 divisors (see below), whose sum is σ = 349754112. Its totient is φ = 291130840.

The previous prime is 320425907. The next prime is 320425927. The reversal of 320425919 is 919524023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-320425919 is a prime.

It is a super-2 number, since 2×320425919² = 205345539133989122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320425999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14762 + ... + 29304.

It is an arithmetic number, because the mean of its divisors is an integer number (43719264).

Almost surely, 2^320425919 is an apocalyptic number.

320425919 is a deficient number, since it is larger than the sum of its proper divisors (29328193).

320425919 is a wasteful number, since it uses less digits than its factorization.

320425919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16557.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 320425919 is about 17900.4446592815. Note that the first 3 decimals coincide. The cubic root of 320425919 is about 684.2937071529.

The spelling of 320425919 in words is "three hundred twenty million, four hundred twenty-five thousand, nine hundred nineteen".