1340365225 has 12 divisors (see below), whose sum is σ = 1664837020. Its totient is φ = 1070496000.

The previous prime is 1340365171. The next prime is 1340365231. The reversal of 1340365225 is 5225630431.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7823209 + 1332542016 = 2797^2 + 36504^2 .

It is not a de Polignac number, because 1340365225 - 2⁹ = 1340364713 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29580 + ... + 59629.

Almost surely, 2^1340365225 is an apocalyptic number.

It is an amenable number.

1340365225 is a deficient number, since it is larger than the sum of its proper divisors (324471795).

1340365225 is an equidigital number, since it uses as much as digits as its factorization.

1340365225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89820 (or 89815 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1340365225 is about 36610.9986889186. The cubic root of 1340365225 is about 1102.5739242873.

Adding to 1340365225 its reverse (5225630431), we get a palindrome (6565995656).

The spelling of 1340365225 in words is "one billion, three hundred forty million, three hundred sixty-five thousand, two hundred twenty-five".