1320925 has 6 divisors (see below), whose sum is σ = 1637978. Its totient is φ = 1056720.

The previous prime is 1320923. The next prime is 1320929. The reversal of 1320925 is 5290231.

It can be written as a sum of positive squares in 3 ways, for example, as 19044 + 1301881 = 138^2 + 1141^2 .

It is not a de Polignac number, because 1320925 - 2¹ = 1320923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320896 and 1320905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320923) 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, 26394 + ... + 26443.

2^1320925 is an apocalyptic number.

It is an amenable number.

1320925 is a deficient number, since it is larger than the sum of its proper divisors (317053).

1320925 is an equidigital number, since it uses as much as digits as its factorization.

1320925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52847 (or 52842 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1320925 is about 1149.3150133884. The cubic root of 1320925 is about 109.7217485307.

The spelling of 1320925 in words is "one million, three hundred twenty thousand, nine hundred twenty-five".