288225917 has 4 divisors (see below), whose sum is σ = 329401056. Its totient is φ = 247050780.

The previous prime is 288225911. The next prime is 288225919. The reversal of 288225917 is 719522882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 288225917 - 2⁴ = 288225901 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 (288225911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20587559 + ... + 20587572.

It is an arithmetic number, because the mean of its divisors is an integer number (82350264).

Almost surely, 2^288225917 is an apocalyptic number.

It is an amenable number.

288225917 is a deficient number, since it is larger than the sum of its proper divisors (41175139).

288225917 is an equidigital number, since it uses as much as digits as its factorization.

288225917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41175138.

The product of its digits is 161280, while the sum is 44.

The square root of 288225917 is about 16977.2175871077. The cubic root of 288225917 is about 660.5580809203.

The spelling of 288225917 in words is "two hundred eighty-eight million, two hundred twenty-five thousand, nine hundred seventeen".