325665560 has 64 divisors (see below), whose sum is σ = 811365120. Its totient is φ = 116645760.

The previous prime is 325665553. The next prime is 325665581. The reversal of 325665560 is 65566523.

It is a super-2 number, since 2×325665560² = 212116113940227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23957 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (12677580).

Almost surely, 2^325665560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325665560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405682560).

325665560 is an abundant number, since it is smaller than the sum of its proper divisors (485699560).

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

325665560 is a wasteful number, since it uses less digits than its factorization.

325665560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11136 (or 11132 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 325665560 is about 18046.2062495141. The cubic root of 325665560 is about 688.0034421587.

The spelling of 325665560 in words is "three hundred twenty-five million, six hundred sixty-five thousand, five hundred sixty".