105825217 has 4 divisors (see below), whose sum is σ = 108685396. Its totient is φ = 102965040.

The previous prime is 105825199. The next prime is 105825233. The reversal of 105825217 is 712528501.

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 90801841 + 15023376 = 9529^2 + 3876^2 .

It is a cyclic number.

It is not a de Polignac number, because 105825217 - 2²³ = 97436609 is a prime.

It is a super-2 number, since 2×105825217² = 22397953106194178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105825257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430034 + ... + 1430107.

It is an arithmetic number, because the mean of its divisors is an integer number (27171349).

Almost surely, 2^105825217 is an apocalyptic number.

It is an amenable number.

105825217 is a deficient number, since it is larger than the sum of its proper divisors (2860179).

105825217 is an equidigital number, since it uses as much as digits as its factorization.

105825217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860178.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 105825217 is about 10287.1384262097. The cubic root of 105825217 is about 473.0020858476.

The spelling of 105825217 in words is "one hundred five million, eight hundred twenty-five thousand, two hundred seventeen".