325775661 has 8 divisors (see below), whose sum is σ = 436099104. Its totient is φ = 216318000.

The previous prime is 325775651. The next prime is 325775663. The reversal of 325775661 is 166577523.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-325775661 is a prime.

It is a super-2 number, since 2×325775661² = 212259562599973842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325775663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215566 + ... + 217071.

It is an arithmetic number, because the mean of its divisors is an integer number (54512388).

Almost surely, 2^325775661 is an apocalyptic number.

It is an amenable number.

325775661 is a deficient number, since it is larger than the sum of its proper divisors (110323443).

325775661 is a wasteful number, since it uses less digits than its factorization.

325775661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432891.

The product of its digits is 264600, while the sum is 42.

The square root of 325775661 is about 18049.2565220842. The cubic root of 325775661 is about 688.0809668153.

The spelling of 325775661 in words is "three hundred twenty-five million, seven hundred seventy-five thousand, six hundred sixty-one".