325221 has 16 divisors (see below), whose sum is σ = 483840. Its totient is φ = 192960.

The previous prime is 325219. The next prime is 325229. The reversal of 325221 is 122523.

325221 is nontrivially palindromic in base 15.

325221 is a nontrivial binomial coefficient, being equal to C(807, 2).

It is not a de Polignac number, because 325221 - 2¹ = 325219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 325221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2³²⁵²²¹ is an apocalyptic number.

325221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

325221 is the 806-th triangular number.

It is an amenable number.

325221 is a deficient number, since it is larger than the sum of its proper divisors (158619).

325221 is a wasteful number, since it uses less digits than its factorization.

325221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316.

The product of its digits is 120, while the sum is 15.

The square root of 325221 is about 570.2815094320. The cubic root of 325221 is about 68.7690239365.

Adding to 325221 its reverse (122523), we get a palindrome (447744).

It can be divided in two parts, 32522 and 1, that added together give a palindrome (32523).

The spelling of 325221 in words is "three hundred twenty-five thousand, two hundred twenty-one".