325660268781 has 12 divisors (see below), whose sum is σ = 472417045308. Its totient is φ = 216175055424.

The previous prime is 325660268743. The next prime is 325660268827. The reversal of 325660268781 is 187862066523.

325660268781 is a `hidden beast` number, since 3 + 2 + 566 + 0 + 2 + 6 + 8 + 78 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 66486622500 + 259173646281 = 257850^2 + 509091^2 .

It is not a de Polignac number, because 325660268781 - 2¹⁴ = 325660252397 is a prime.

It is a super-2 number, since 2×325660268781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325660268701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77646990 + ... + 77651183.

It is an arithmetic number, because the mean of its divisors is an integer number (39368087109).

Almost surely, 2^325660268781 is an apocalyptic number.

It is an amenable number.

325660268781 is a deficient number, since it is larger than the sum of its proper divisors (146756776527).

325660268781 is a wasteful number, since it uses less digits than its factorization.

325660268781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155298412 (or 155298409 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

It can be divided in two parts, 325660 and 268781, that added together give a square (594441 = 771²).

The spelling of 325660268781 in words is "three hundred twenty-five billion, six hundred sixty million, two hundred sixty-eight thousand, seven hundred eighty-one".