525663625512561 has 32 divisors (see below), whose sum is σ = 762278768824320. Its totient is φ = 320868283723776.

The previous prime is 525663625512517. The next prime is 525663625512589. The reversal of 525663625512561 is 165215526366525.

It is not a de Polignac number, because 525663625512561 - 2⁶ = 525663625512497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 525663625512495 and 525663625512504.

It is not an unprimeable number, because it can be changed into a prime (525663625532561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6505096 + ... + 33070281.

It is an arithmetic number, because the mean of its divisors is an integer number (23821211525760).

Almost surely, 2^{525663625512561} is an apocalyptic number.

525663625512561 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

525663625512561 is a deficient number, since it is larger than the sum of its proper divisors (236615143311759).

525663625512561 is a wasteful number, since it uses less digits than its factorization.

525663625512561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39582473.

The product of its digits is 97200000, while the sum is 60.

The spelling of 525663625512561 in words is "five hundred twenty-five trillion, six hundred sixty-three billion, six hundred twenty-five million, five hundred twelve thousand, five hundred sixty-one".