320636125 has 8 divisors (see below), whose sum is σ = 400154040. Its totient is φ = 256508800.

The previous prime is 320636101. The next prime is 320636137. The reversal of 320636125 is 521636023.

It can be written as a sum of positive squares in 4 ways, for example, as 1585081 + 319051044 = 1259^2 + 17862^2 .

It is not a de Polignac number, because 320636125 - 2⁹ = 320635613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320636093 and 320636102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282420 + ... + 1282669.

It is an arithmetic number, because the mean of its divisors is an integer number (50019255).

Almost surely, 2^320636125 is an apocalyptic number.

It is an amenable number.

320636125 is a deficient number, since it is larger than the sum of its proper divisors (79517915).

320636125 is an equidigital number, since it uses as much as digits as its factorization.

320636125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565104 (or 2565094 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 320636125 is about 17906.3152267573. The cubic root of 320636125 is about 684.4433113634.

The spelling of 320636125 in words is "three hundred twenty million, six hundred thirty-six thousand, one hundred twenty-five".