636489325 has 12 divisors (see below), whose sum is σ = 789651220. Its totient is φ = 508930560.

The previous prime is 636489323. The next prime is 636489353. The reversal of 636489325 is 523984636.

It is a happy number.

636489325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 180794916 + 455694409 = 13446^2 + 21347^2 .

It is not a de Polignac number, because 636489325 - 2¹ = 636489323 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636489323) 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, 54397 + ... + 65053.

Almost surely, 2^636489325 is an apocalyptic number.

It is an amenable number.

636489325 is a deficient number, since it is larger than the sum of its proper divisors (153161895).

636489325 is a wasteful number, since it uses less digits than its factorization.

636489325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056 (or 13051 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 636489325 is about 25228.7400597018. The cubic root of 636489325 is about 860.1952526743.

The spelling of 636489325 in words is "six hundred thirty-six million, four hundred eighty-nine thousand, three hundred twenty-five".