325718640 has 480 divisors, whose sum is σ = 1316165760. Its totient is φ = 71368704.

The previous prime is 325718639. The next prime is 325718683. The reversal of 325718640 is 46817523.

325718640 is a `hidden beast` number, since 3 + 2 + 5 + 7 + 1 + 8 + 640 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 325718595 and 325718604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3659716 + ... + 3659804.

It is an arithmetic number, because the mean of its divisors is an integer number (2742012).

Almost surely, 2^325718640 is an apocalyptic number.

325718640 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 325718640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658082880).

325718640 is an abundant number, since it is smaller than the sum of its proper divisors (990447120).

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

325718640 is a wasteful number, since it uses less digits than its factorization.

325718640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 325718640 is about 18047.6768588093. The cubic root of 325718640 is about 688.0408191934.

The spelling of 325718640 in words is "three hundred twenty-five million, seven hundred eighteen thousand, six hundred forty".