1325 has 6 divisors (see below), whose sum is σ = 1674.
Its totient is φ = 1040.
The previous prime is 1321. The next prime is 1327. The reversal of 1325 is 5231.
1325 = 202 + 212 + 222.
1325 is nontrivially palindromic in base 15.
It can be written as a sum of positive squares in 3 ways, for example, as 169 + 1156 = 13^2 + 34^2
It is not a de Polignac number, because 1325 - 22 = 1321 is a prime.
It is a Duffinian number.
1325 is an undulating number in base 15.
It is a plaindrome in base 8 and base 13.
It is a nialpdrome in base 11.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1321) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2 + ... + 51.
It is an arithmetic number, because the mean of its divisors is an integer number (279).
It is an amenable number.
1325 is a deficient number, since it is larger than the sum of its proper divisors (349).
1325 is an equidigital number, since it uses as much as digits as its factorization.
1325 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 63 (or 58 counting only the distinct ones).
The product of its digits is 30, while the sum is 11.
The square root of 1325 is about 36.4005494464.
The cubic root of 1325 is about 10.9834461751.
Adding to 1325 its reverse (5231), we get a palindrome (6556).
It can be divided in two parts, 13 and 25, that multiplied together give a triangular number (325 = T25).
The spelling of 1325 in words is "one thousand, three hundred twenty-five".