325305531 has 8 divisors (see below), whose sum is σ = 481934160. Its totient is φ = 216870336.

The previous prime is 325305511. The next prime is 325305559. The reversal of 325305531 is 135503523.

325305531 is a `hidden beast` number, since 325 + 305 + 5 + 31 = 666.

It is not a de Polignac number, because 325305531 - 2¹⁷ = 325174459 is a prime.

It is a super-2 number, since 2×325305531² = 211647376998383922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 12048353 = 325305531 / (3 + 2 + 5 + 3 + 0 + 5 + 5 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 325305495 and 325305504.

It is not an unprimeable number, because it can be changed into a prime (325305511) 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, 6024150 + ... + 6024203.

It is an arithmetic number, because the mean of its divisors is an integer number (60241770).

Almost surely, 2^325305531 is an apocalyptic number.

325305531 is a deficient number, since it is larger than the sum of its proper divisors (156628629).

325305531 is a wasteful number, since it uses less digits than its factorization.

325305531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12048362 (or 12048356 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The square root of 325305531 is about 18036.2282919684. The cubic root of 325305531 is about 687.7498153739.

The spelling of 325305531 in words is "three hundred twenty-five million, three hundred five thousand, five hundred thirty-one".