13566897127525 has 12 divisors (see below), whose sum is σ = 19226231358112. Its totient is φ = 9303015173040.

The previous prime is 13566897127493. The next prime is 13566897127559. The reversal of 13566897127525 is 52572179866531.

It is a happy number.

It is not a de Polignac number, because 13566897127525 - 2⁵ = 13566897127493 is a prime.

It is a super-2 number, since 2×13566897127525² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38762563047 + ... + 38762563396.

Almost surely, 2^{13566897127525} is an apocalyptic number.

It is an amenable number.

13566897127525 is a deficient number, since it is larger than the sum of its proper divisors (5659334230587).

13566897127525 is an equidigital number, since it uses as much as digits as its factorization.

13566897127525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77525126460 (or 77525126455 counting only the distinct ones).

The product of its digits is 190512000, while the sum is 67.

The spelling of 13566897127525 in words is "thirteen trillion, five hundred sixty-six billion, eight hundred ninety-seven million, one hundred twenty-seven thousand, five hundred twenty-five".