525865133427 has 8 divisors (see below), whose sum is σ = 725331218640. Its totient is φ = 338487901920.

The previous prime is 525865133407. The next prime is 525865133429. The reversal of 525865133427 is 724331568525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 525865133427 - 2²⁴ = 525848356211 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 525865133427.

It is not an unprimeable number, because it can be changed into a prime (525865133429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3022213324 + ... + 3022213497.

It is an arithmetic number, because the mean of its divisors is an integer number (90666402330).

Almost surely, 2^525865133427 is an apocalyptic number.

525865133427 is a deficient number, since it is larger than the sum of its proper divisors (199466085213).

525865133427 is a wasteful number, since it uses less digits than its factorization.

525865133427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044426853.

The product of its digits is 6048000, while the sum is 51.

The spelling of 525865133427 in words is "five hundred twenty-five billion, eight hundred sixty-five million, one hundred thirty-three thousand, four hundred twenty-seven".