320425437 has 16 divisors (see below), whose sum is σ = 442650240. Its totient is φ = 205931712.

The previous prime is 320425433. The next prime is 320425451. The reversal of 320425437 is 734524023.

It is not a de Polignac number, because 320425437 - 2² = 320425433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320425433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62163 + ... + 67119.

It is an arithmetic number, because the mean of its divisors is an integer number (27665640).

Almost surely, 2^320425437 is an apocalyptic number.

It is an amenable number.

320425437 is a deficient number, since it is larger than the sum of its proper divisors (122224803).

320425437 is a wasteful number, since it uses less digits than its factorization.

320425437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 320425437 is about 17900.4311959237. The cubic root of 320425437 is about 684.2933640369.

The spelling of 320425437 in words is "three hundred twenty million, four hundred twenty-five thousand, four hundred thirty-seven".