525308289 has 16 divisors (see below), whose sum is σ = 764903424. Its totient is φ = 318027600.

The previous prime is 525308263. The next prime is 525308309. The reversal of 525308289 is 982803525.

It is not a de Polignac number, because 525308289 - 2⁸ = 525308033 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 525308289.

It is not an unprimeable number, because it can be changed into a prime (525308249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24672 + ... + 40734.

It is an arithmetic number, because the mean of its divisors is an integer number (47806464).

Almost surely, 2^525308289 is an apocalyptic number.

It is an amenable number.

525308289 is a deficient number, since it is larger than the sum of its proper divisors (239595135).

525308289 is a wasteful number, since it uses less digits than its factorization.

525308289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17068.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 525308289 is about 22919.6049049716. The cubic root of 525308289 is about 806.8721976074.

The spelling of 525308289 in words is "five hundred twenty-five million, three hundred eight thousand, two hundred eighty-nine".