325824415661 has 4 divisors (see below), whose sum is σ = 325938303324. Its totient is φ = 325710528000.

The previous prime is 325824415603. The next prime is 325824415681. The reversal of 325824415661 is 166514428523.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261191522761 + 64632892900 = 511069^2 + 254230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325824415661 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 (325824415601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56939540 + ... + 56945261.

It is an arithmetic number, because the mean of its divisors is an integer number (81484575831).

Almost surely, 2^325824415661 is an apocalyptic number.

It is an amenable number.

325824415661 is a deficient number, since it is larger than the sum of its proper divisors (113887663).

325824415661 is a wasteful number, since it uses less digits than its factorization.

325824415661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113887662.

The product of its digits is 1382400, while the sum is 47.

The spelling of 325824415661 in words is "three hundred twenty-five billion, eight hundred twenty-four million, four hundred fifteen thousand, six hundred sixty-one".