225210117 has 16 divisors (see below), whose sum is σ = 328523328. Its totient is φ = 136097280.

The previous prime is 225210113. The next prime is 225210127. The reversal of 225210117 is 711012522.

It is not a de Polignac number, because 225210117 - 2² = 225210113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225210093 and 225210102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225210113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983 + ... + 21315.

It is an arithmetic number, because the mean of its divisors is an integer number (20532708).

Almost surely, 2^225210117 is an apocalyptic number.

It is an amenable number.

225210117 is a deficient number, since it is larger than the sum of its proper divisors (103313211).

225210117 is a wasteful number, since it uses less digits than its factorization.

225210117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19700.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 225210117 is about 15007.0022656092. The cubic root of 225210117 is about 608.4094701395.

Adding to 225210117 its reverse (711012522), we get a palindrome (936222639).

The spelling of 225210117 in words is "two hundred twenty-five million, two hundred ten thousand, one hundred seventeen".