289525 has 12 divisors (see below), whose sum is σ = 369892. Its totient is φ = 224640.

The previous prime is 289511. The next prime is 289543. The reversal of 289525 is 525982.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 20164 + 269361 = 142^2 + 519^2 .

It is not a de Polignac number, because 289525 - 2⁷ = 289397 is a prime.

It is a Duffinian number.

Its product of digits (7200) is a multiple of the sum of its prime factors (360).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 769 + ... + 1081.

2²⁸⁹⁵²⁵ is an apocalyptic number.

289525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289525 is a deficient number, since it is larger than the sum of its proper divisors (80367).

289525 is a wasteful number, since it uses less digits than its factorization.

289525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 355 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 289525 is about 538.0752735445. The cubic root of 289525 is about 66.1549009345.

The spelling of 289525 in words is "two hundred eighty-nine thousand, five hundred twenty-five".