1320425 has 6 divisors (see below), whose sum is σ = 1637358.
Its totient is φ = 1056320.
The previous prime is 1320421. The next prime is 1320427. The reversal of 1320425 is 5240231.
Adding to 1320425 its reverse (5240231), we get a palindrome (6560656).
It can be written as a sum of positive squares in 3 ways, for example, as 23104 + 1297321 = 152^2 + 1139^2
It is not a de Polignac number, because 1320425 - 22 = 1320421 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1320421) 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, 26384 + ... + 26433.
It is an arithmetic number, because the mean of its divisors is an integer number (272893).
21320425 is an apocalyptic number.
It is an amenable number.
1320425 is a deficient number, since it is larger than the sum of its proper divisors (316933).
1320425 is an equidigital number, since it uses as much as digits as its factorization.
1320425 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 52827 (or 52822 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 17.
The square root of 1320425 is about 1149.0974719318.
The cubic root of 1320425 is about 109.7079027287.
The spelling of 1320425 in words is "one million, three hundred twenty thousand, four hundred twenty-five".