325775520 has 576 divisors, whose sum is σ = 1413417600. Its totient is φ = 70543872.

The previous prime is 325775431. The next prime is 325775543. The reversal of 325775520 is 25577523.

It is a happy number.

325775520 is a `hidden beast` number, since 32 + 5 + 77 + 552 + 0 = 666.

It is a super-2 number, since 2×325775520² = 212259378862540800, which contains 22 as substring.

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

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 95 ways as a sum of consecutive naturals, for example, 17146071 + ... + 17146089.

It is an arithmetic number, because the mean of its divisors is an integer number (2453850).

Almost surely, 2^325775520 is an apocalyptic number.

325775520 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 325775520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706708800).

325775520 is an abundant number, since it is smaller than the sum of its proper divisors (1087642080).

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

325775520 is an equidigital number, since it uses as much as digits as its factorization.

325775520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 325775520 is about 18049.2526161057. The cubic root of 325775520 is about 688.0808675451.

The spelling of 325775520 in words is "three hundred twenty-five million, seven hundred seventy-five thousand, five hundred twenty".