1340321225 has 24 divisors (see below), whose sum is σ = 1775968920. Its totient is φ = 999889920.

The previous prime is 1340321197. The next prime is 1340321233. The reversal of 1340321225 is 5221230431.

It can be written as a sum of positive squares in 12 ways, for example, as 96983104 + 1243338121 = 9848^2 + 35261^2 .

It is not a de Polignac number, because 1340321225 - 2¹⁶ = 1340255689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340321225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31859 + ... + 60791.

It is an arithmetic number, because the mean of its divisors is an integer number (73998705).

Almost surely, 2^1340321225 is an apocalyptic number.

It is an amenable number.

1340321225 is a deficient number, since it is larger than the sum of its proper divisors (435647695).

1340321225 is a wasteful number, since it uses less digits than its factorization.

1340321225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29069 (or 29064 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1340321225 is about 36610.3977716714. The cubic root of 1340321225 is about 1102.5618594703.

Adding to 1340321225 its reverse (5221230431), we get a palindrome (6561551656).

The spelling of 1340321225 in words is "one billion, three hundred forty million, three hundred twenty-one thousand, two hundred twenty-five".