13125415504205 has 16 divisors (see below), whose sum is σ = 15788119131120. Its totient is φ = 10475255881728.

The previous prime is 13125415504139. The next prime is 13125415504249. The reversal of 13125415504205 is 50240551452131.

It can be written as a sum of positive squares in 8 ways, for example, as 72470255209 + 13052945248996 = 269203^2 + 3612886^2 .

It is a cyclic number.

It is not a de Polignac number, because 13125415504205 - 2¹⁶ = 13125415438669 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27983861 + ... + 28449029.

It is an arithmetic number, because the mean of its divisors is an integer number (986757445695).

Almost surely, 2^{13125415504205} is an apocalyptic number.

It is an amenable number.

13125415504205 is a deficient number, since it is larger than the sum of its proper divisors (2662703626915).

13125415504205 is a wasteful number, since it uses less digits than its factorization.

13125415504205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478640.

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 13125415504205 its reverse (50240551452131), we get a palindrome (63365966956336).

The spelling of 13125415504205 in words is "thirteen trillion, one hundred twenty-five billion, four hundred fifteen million, five hundred four thousand, two hundred five".