289120925 has 12 divisors (see below), whose sum is σ = 374098080. Its totient is φ = 221239920.

The previous prime is 289120919. The next prime is 289120927. The reversal of 289120925 is 529021982.

It is not a de Polignac number, because 289120925 - 2¹² = 289116829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289120927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250835 + ... + 251984.

It is an arithmetic number, because the mean of its divisors is an integer number (31174840).

Almost surely, 2^289120925 is an apocalyptic number.

289120925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289120925 is a deficient number, since it is larger than the sum of its proper divisors (84977155).

289120925 is a wasteful number, since it uses less digits than its factorization.

289120925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502852 (or 502847 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 289120925 is about 17003.5562456799. The cubic root of 289120925 is about 661.2411028638.

The spelling of 289120925 in words is "two hundred eighty-nine million, one hundred twenty thousand, nine hundred twenty-five".