325857681 has 8 divisors (see below), whose sum is σ = 482752160. Its totient is φ = 217238436.

The previous prime is 325857673. The next prime is 325857689. The reversal of 325857681 is 186758523.

325857681 is a `hidden beast` number, since 3 + 2 + 585 + 7 + 68 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (325857673) and next prime (325857689).

It is not a de Polignac number, because 325857681 - 2³ = 325857673 is a prime.

It is a super-2 number, since 2×325857681² = 212366456533395522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325857689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6034375 + ... + 6034428.

It is an arithmetic number, because the mean of its divisors is an integer number (60344020).

Almost surely, 2^325857681 is an apocalyptic number.

It is an amenable number.

325857681 is a deficient number, since it is larger than the sum of its proper divisors (156894479).

325857681 is a wasteful number, since it uses less digits than its factorization.

325857681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12068812 (or 12068806 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 325857681 is about 18051.5284948394. The cubic root of 325857681 is about 688.1387076392.

The spelling of 325857681 in words is "three hundred twenty-five million, eight hundred fifty-seven thousand, six hundred eighty-one".