525805505 has 16 divisors (see below), whose sum is σ = 646652160. Its totient is φ = 410218368.

The previous prime is 525805471. The next prime is 525805513. The reversal of 525805505 is 505508525.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 525805505 - 2¹⁶ = 525739969 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 172424 + ... + 175446.

It is an arithmetic number, because the mean of its divisors is an integer number (40415760).

Almost surely, 2^525805505 is an apocalyptic number.

It is an amenable number.

525805505 is a deficient number, since it is larger than the sum of its proper divisors (120846655).

525805505 is a wasteful number, since it uses less digits than its factorization.

525805505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880.

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 525805505 is about 22930.4492978223. The cubic root of 525805505 is about 807.1266915006.

It can be divided in two parts, 52580 and 5505, that added together give a palindrome (58085).

The spelling of 525805505 in words is "five hundred twenty-five million, eight hundred five thousand, five hundred five".