1215485825413 has 2 divisors, whose sum is σ = 1215485825414. Its totient is φ = 1215485825412.

The previous prime is 1215485825347. The next prime is 1215485825431. The reversal of 1215485825413 is 3145285845121.

Together with next prime (1215485825431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744185726244 + 471300099169 = 862662^2 + 686513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1215485825413 - 2¹⁷ = 1215485694341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215485895413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607742912706 + 607742912707.

It is an arithmetic number, because the mean of its divisors is an integer number (607742912707).

Almost surely, 2^{1215485825413} is an apocalyptic number.

It is an amenable number.

1215485825413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215485825413 is an equidigital number, since it uses as much as digits as its factorization.

1215485825413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536000, while the sum is 49.

The spelling of 1215485825413 in words is "one trillion, two hundred fifteen billion, four hundred eighty-five million, eight hundred twenty-five thousand, four hundred thirteen".