321608025 has 18 divisors (see below), whose sum is σ = 576036110. Its totient is φ = 171524160.

The previous prime is 321608017. The next prime is 321608029. The reversal of 321608025 is 520806123.

321608025 is a `hidden beast` number, since 32 + 1 + 608 + 0 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1806336 + 319801689 = 1344^2 + 17883^2 .

It is not a de Polignac number, because 321608025 - 2³ = 321608017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321608025.

It is not an unprimeable number, because it can be changed into a prime (321608029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 714460 + ... + 714909.

Almost surely, 2^321608025 is an apocalyptic number.

It is an amenable number.

321608025 is a deficient number, since it is larger than the sum of its proper divisors (254428085).

321608025 is a wasteful number, since it uses less digits than its factorization.

321608025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429385 (or 1429377 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 321608025 is about 17933.4331626713. The cubic root of 321608025 is about 685.1341666267.

The spelling of 321608025 in words is "three hundred twenty-one million, six hundred eight thousand, twenty-five".