1365625013 has 2 divisors, whose sum is σ = 1365625014. Its totient is φ = 1365625012.

The previous prime is 1365624991. The next prime is 1365625039. The reversal of 1365625013 is 3105265631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1340804689 + 24820324 = 36617^2 + 4982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365625013 - 2¹⁰ = 1365623989 is a prime.

It is a super-3 number, since 3×1365625013³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1365625213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682812506 + 682812507.

It is an arithmetic number, because the mean of its divisors is an integer number (682812507).

Almost surely, 2^1365625013 is an apocalyptic number.

It is an amenable number.

1365625013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365625013 is an equidigital number, since it uses as much as digits as its factorization.

1365625013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1365625013 is about 36954.3639236288. The cubic root of 1365625013 is about 1109.4570330960.

The spelling of 1365625013 in words is "one billion, three hundred sixty-five million, six hundred twenty-five thousand, thirteen".