1321325 has 12 divisors (see below), whose sum is σ = 1735380. Its totient is φ = 994560.

The previous prime is 1321319. The next prime is 1321349. The reversal of 1321325 is 5231231.

It can be written as a sum of positive squares in 6 ways, for example, as 37636 + 1283689 = 194^2 + 1133^2 .

It is not a de Polignac number, because 1321325 - 2¹⁰ = 1320301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1130 + ... + 1979.

It is an arithmetic number, because the mean of its divisors is an integer number (144615).

2^1321325 is an apocalyptic number.

It is an amenable number.

1321325 is a deficient number, since it is larger than the sum of its proper divisors (414055).

1321325 is a wasteful number, since it uses less digits than its factorization.

1321325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136 (or 3131 counting only the distinct ones).

The product of its digits is 180, while the sum is 17.

The square root of 1321325 is about 1149.4890169114. The cubic root of 1321325 is about 109.7328226568.

Adding to 1321325 its reverse (5231231), we get a palindrome (6552556).

The spelling of 1321325 in words is "one million, three hundred twenty-one thousand, three hundred twenty-five".