636325452 has 144 divisors (see below), whose sum is σ = 1938972672. Its totient is φ = 172022400.

The previous prime is 636325441. The next prime is 636325471. The reversal of 636325452 is 254523636.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 584853 + ... + 585939.

It is an arithmetic number, because the mean of its divisors is an integer number (13465088).

Almost surely, 2^636325452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636325452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969486336).

636325452 is an abundant number, since it is smaller than the sum of its proper divisors (1302647220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636325452 is a wasteful number, since it uses less digits than its factorization.

636325452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1223 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 636325452 is about 25225.4921062008. The cubic root of 636325452 is about 860.1214232737.

It can be divided in two parts, 6363 and 25452, that multiplied together give a square (161951076 = 12726²).

The spelling of 636325452 in words is "six hundred thirty-six million, three hundred twenty-five thousand, four hundred fifty-two".