105225217 has 4 divisors (see below), whose sum is σ = 105537796. Its totient is φ = 104912640.

The previous prime is 105225209. The next prime is 105225233. The reversal of 105225217 is 712522501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46840336 + 58384881 = 6844^2 + 7641^2 .

It is a cyclic number.

It is not a de Polignac number, because 105225217 - 2³ = 105225209 is a prime.

It is a super-2 number, since 2×105225217² = 22144692585394178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105225191 and 105225200.

It is not an unprimeable number, because it can be changed into a prime (105225277) 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, 155784 + ... + 156457.

It is an arithmetic number, because the mean of its divisors is an integer number (26384449).

Almost surely, 2^105225217 is an apocalyptic number.

It is an amenable number.

105225217 is a deficient number, since it is larger than the sum of its proper divisors (312579).

105225217 is an equidigital number, since it uses as much as digits as its factorization.

105225217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312578.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 105225217 is about 10257.9343437166. The cubic root of 105225217 is about 472.1064602936.

Adding to 105225217 its reverse (712522501), we get a palindrome (817747718).

The spelling of 105225217 in words is "one hundred five million, two hundred twenty-five thousand, two hundred seventeen".