289522525 has 12 divisors (see below), whose sum is σ = 367765524. Its totient is φ = 225968000.

The previous prime is 289522487. The next prime is 289522549. The reversal of 289522525 is 525225982.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 71723961 + 217798564 = 8469^2 + 14758^2 .

It is not a de Polignac number, because 289522525 - 2¹³ = 289514333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140206 + ... + 142255.

It is an arithmetic number, because the mean of its divisors is an integer number (30647127).

Almost surely, 2^289522525 is an apocalyptic number.

289522525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289522525 is a deficient number, since it is larger than the sum of its proper divisors (78242999).

289522525 is a wasteful number, since it uses less digits than its factorization.

289522525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282512 (or 282507 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 289522525 is about 17015.3614419442. The cubic root of 289522525 is about 661.5471242591.

The spelling of 289522525 in words is "two hundred eighty-nine million, five hundred twenty-two thousand, five hundred twenty-five".