321080625 has 80 divisors (see below), whose sum is σ = 607305600. Its totient is φ = 167544000.

The previous prime is 321080623. The next prime is 321080629. The reversal of 321080625 is 526080123.

321080625 is a `hidden beast` number, since 32 + 1 + 0 + 8 + 0 + 625 = 666.

It is not a de Polignac number, because 321080625 - 2¹ = 321080623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (321080623) 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 79 ways as a sum of consecutive naturals, for example, 894196 + ... + 894554.

It is an arithmetic number, because the mean of its divisors is an integer number (7591320).

Almost surely, 2^321080625 is an apocalyptic number.

It is an amenable number.

321080625 is a deficient number, since it is larger than the sum of its proper divisors (286224975).

321080625 is an equidigital number, since it uses as much as digits as its factorization.

321080625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 420 counting only the distinct ones).

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

The square root of 321080625 is about 17918.7227502409. The cubic root of 321080625 is about 684.7594480977.

The spelling of 321080625 in words is "three hundred twenty-one million, eighty thousand, six hundred twenty-five".