1340225 has 6 divisors (see below), whose sum is σ = 1661910. Its totient is φ = 1072160.

The previous prime is 1340221. The next prime is 1340237. The reversal of 1340225 is 5220431.

It can be written as a sum of positive squares in 3 ways, for example, as 10816 + 1329409 = 104^2 + 1153^2 .

It is not a de Polignac number, because 1340225 - 2² = 1340221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340221) 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, 26780 + ... + 26829.

It is an arithmetic number, because the mean of its divisors is an integer number (276985).

2^1340225 is an apocalyptic number.

It is an amenable number.

1340225 is a deficient number, since it is larger than the sum of its proper divisors (321685).

1340225 is an equidigital number, since it uses as much as digits as its factorization.

1340225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53619 (or 53614 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1340225 is about 1157.6808713976. The cubic root of 1340225 is about 110.2535473618.

Adding to 1340225 its reverse (5220431), we get a palindrome (6560656).

The spelling of 1340225 in words is "one million, three hundred forty thousand, two hundred twenty-five".