639325 has 12 divisors (see below), whose sum is σ = 803520. Its totient is φ = 504560.

The previous prime is 639311. The next prime is 639329. The reversal of 639325 is 523936.

639325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 639325 - 2¹¹ = 637277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 639293 and 639302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2556 + ... + 2794.

It is an arithmetic number, because the mean of its divisors is an integer number (66960).

2⁶³⁹³²⁵ is an apocalyptic number.

It is an amenable number.

639325 is a deficient number, since it is larger than the sum of its proper divisors (164195).

639325 is a wasteful number, since it uses less digits than its factorization.

639325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 351 counting only the distinct ones).

The product of its digits is 4860, while the sum is 28.

The square root of 639325 is about 799.5780137047. The cubic root of 639325 is about 86.1470802060.

The spelling of 639325 in words is "six hundred thirty-nine thousand, three hundred twenty-five".