325181640 has 192 divisors, whose sum is σ = 1174564800. Its totient is φ = 71726592.

The previous prime is 325181551. The next prime is 325181653. The reversal of 325181640 is 46181523.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 325181598 and 325181607.

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, 169567 + ... + 171473.

It is an arithmetic number, because the mean of its divisors is an integer number (6117525).

Almost surely, 2^325181640 is an apocalyptic number.

325181640 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 325181640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587282400).

325181640 is an abundant number, since it is smaller than the sum of its proper divisors (849383160).

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

325181640 is a wasteful number, since it uses less digits than its factorization.

325181640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964 (or 1953 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 325181640 is about 18032.7934608036. The cubic root of 325181640 is about 687.6624955845.

The spelling of 325181640 in words is "three hundred twenty-five million, one hundred eighty-one thousand, six hundred forty".