325666656000 has 1728 divisors, whose sum is σ = 1441081614336. Its totient is φ = 71663616000.

The previous prime is 325666655999. The next prime is 325666656019. The reversal of 325666656000 is 656666523.

It is a tau number, because it is divible by the number of its divisors (1728).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1687391904 + ... + 1687392096.

Almost surely, 2^325666656000 is an apocalyptic number.

325666656000 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 325666656000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720540807168).

325666656000 is an abundant number, since it is smaller than the sum of its proper divisors (1115414958336).

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

325666656000 is an equidigital number, since it uses as much as digits as its factorization.

325666656000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 325666656000 in words is "three hundred twenty-five billion, six hundred sixty-six million, six hundred fifty-six thousand".