325656111661 has 8 divisors (see below), whose sum is σ = 332022884760. Its totient is φ = 319297572672.

The previous prime is 325656111659. The next prime is 325656111679. The reversal of 325656111661 is 166111656523.

It can be written as a sum of positive squares in 4 ways, for example, as 245074502500 + 80581609161 = 495050^2 + 283869^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 325656111661 - 2¹ = 325656111659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325656115661) 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, 1978626 + ... + 2136883.

It is an arithmetic number, because the mean of its divisors is an integer number (41502860595).

Almost surely, 2^325656111661 is an apocalyptic number.

It is an amenable number.

325656111661 is a deficient number, since it is larger than the sum of its proper divisors (6366773099).

325656111661 is a wasteful number, since it uses less digits than its factorization.

325656111661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117055.

The product of its digits is 194400, while the sum is 43.

The spelling of 325656111661 in words is "three hundred twenty-five billion, six hundred fifty-six million, one hundred eleven thousand, six hundred sixty-one".