289749325 has 12 divisors (see below), whose sum is σ = 361279828. Its totient is φ = 230515200.

The previous prime is 289749323. The next prime is 289749371. The reversal of 289749325 is 523947982.

It can be written as a sum of positive squares in 6 ways, for example, as 9320809 + 280428516 = 3053^2 + 16746^2 .

It is not a de Polignac number, because 289749325 - 2¹ = 289749323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289749323) by changing a digit.

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, 27492 + ... + 36541.

Almost surely, 2^289749325 is an apocalyptic number.

289749325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289749325 is a deficient number, since it is larger than the sum of its proper divisors (71530503).

289749325 is a wasteful number, since it uses less digits than its factorization.

289749325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64224 (or 64219 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 289749325 is about 17022.0247033072. The cubic root of 289749325 is about 661.7198220791.

The spelling of 289749325 in words is "two hundred eighty-nine million, seven hundred forty-nine thousand, three hundred twenty-five".