1340623325 has 6 divisors (see below), whose sum is σ = 1662372954. Its totient is φ = 1072498640.

The previous prime is 1340623307. The next prime is 1340623327. The reversal of 1340623325 is 5233260431.

It can be written as a sum of positive squares in 3 ways, for example, as 111556 + 1340511769 = 334^2 + 36613^2 .

It is not a de Polignac number, because 1340623325 - 2⁸ = 1340623069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340623327) 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, 26812442 + ... + 26812491.

It is an arithmetic number, because the mean of its divisors is an integer number (277062159).

Almost surely, 2^1340623325 is an apocalyptic number.

It is an amenable number.

1340623325 is a deficient number, since it is larger than the sum of its proper divisors (321749629).

1340623325 is an equidigital number, since it uses as much as digits as its factorization.

1340623325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53624943 (or 53624938 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1340623325 is about 36614.5234162620. The cubic root of 1340623325 is about 1102.6446900907.

Adding to 1340623325 its reverse (5233260431), we get a palindrome (6573883756).

The spelling of 1340623325 in words is "one billion, three hundred forty million, six hundred twenty-three thousand, three hundred twenty-five".