325649880 has 96 divisors (see below), whose sum is σ = 1084224960. Its totient is φ = 84718080.

The previous prime is 325649809. The next prime is 325649917. The reversal of 325649880 is 88946523.

325649880 is a `hidden beast` number, since 3 + 2 + 564 + 9 + 8 + 80 = 666.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3729 + ... + 25791.

It is an arithmetic number, because the mean of its divisors is an integer number (11294010).

Almost surely, 2^325649880 is an apocalyptic number.

325649880 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 325649880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542112480).

325649880 is an abundant number, since it is smaller than the sum of its proper divisors (758575080).

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

325649880 is a wasteful number, since it uses less digits than its factorization.

325649880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22121 (or 22114 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 325649880 is about 18045.7718039434. The cubic root of 325649880 is about 687.9924000873.

The spelling of 325649880 in words is "three hundred twenty-five million, six hundred forty-nine thousand, eight hundred eighty".