1328425 has 12 divisors (see below), whose sum is σ = 1882816. Its totient is φ = 910800.

The previous prime is 1328417. The next prime is 1328447. The reversal of 1328425 is 5248231.

It is not a de Polignac number, because 1328425 - 2³ = 1328417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a d-powerful number, because it can be written as 1 + 3¹¹ + 2¹⁴ + 8⁴ + 4⁶ + 2²⁰ + 5⁷ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328425.

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, 3621 + ... + 3970.

2^1328425 is an apocalyptic number.

It is an amenable number.

1328425 is a deficient number, since it is larger than the sum of its proper divisors (554391).

1328425 is an equidigital number, since it uses as much as digits as its factorization.

1328425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7608 (or 7603 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 1328425 is about 1152.5732080870. The cubic root of 1328425 is about 109.9290175661.

The spelling of 1328425 in words is "one million, three hundred twenty-eight thousand, four hundred twenty-five".