325664636040 has 192 divisors, whose sum is σ = 1122082191360. Its totient is φ = 81770964480.

The previous prime is 325664636021. The next prime is 325664636051. The reversal of 325664636040 is 40636466523.

325664636040 is a `hidden beast` number, since 3 + 2 + 5 + 6 + 6 + 4 + 636 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 18577 + ... + 807263.

It is an arithmetic number, because the mean of its divisors is an integer number (5844178080).

Almost surely, 2^325664636040 is an apocalyptic number.

325664636040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325664636040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561041095680).

325664636040 is an abundant number, since it is smaller than the sum of its proper divisors (796417555320).

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

325664636040 is a wasteful number, since it uses less digits than its factorization.

325664636040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788772 (or 788765 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 325664636040 in words is "three hundred twenty-five billion, six hundred sixty-four million, six hundred thirty-six thousand, forty".