289310225 has 12 divisors (see below), whose sum is σ = 361487280. Its totient is φ = 229678800.

The previous prime is 289310213. The next prime is 289310243. The reversal of 289310225 is 522013982.

It is a happy number.

It is not a de Polignac number, because 289310225 - 2¹⁰ = 289309201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289310191 and 289310200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40895 + ... + 47444.

It is an arithmetic number, because the mean of its divisors is an integer number (30123940).

Almost surely, 2^289310225 is an apocalyptic number.

289310225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289310225 is a deficient number, since it is larger than the sum of its proper divisors (72177055).

289310225 is a wasteful number, since it uses less digits than its factorization.

289310225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88480 (or 88475 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 289310225 is about 17009.1218174249. The cubic root of 289310225 is about 661.3853857816.

The spelling of 289310225 in words is "two hundred eighty-nine million, three hundred ten thousand, two hundred twenty-five".