105243225 has 24 divisors (see below), whose sum is σ = 175173312. Its totient is φ = 55752000.

The previous prime is 105243221. The next prime is 105243227. The reversal of 105243225 is 522342501.

It is not a de Polignac number, because 105243225 - 2² = 105243221 is a prime.

It is a super-2 number, since 2×105243225² = 22152272816801250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105243195 and 105243204.

It is not an unprimeable number, because it can be changed into a prime (105243221) 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 23 ways as a sum of consecutive naturals, for example, 6679 + ... + 15971.

It is an arithmetic number, because the mean of its divisors is an integer number (7298888).

Almost surely, 2^105243225 is an apocalyptic number.

105243225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105243225 is a deficient number, since it is larger than the sum of its proper divisors (69930087).

105243225 is a wasteful number, since it uses less digits than its factorization.

105243225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9457 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 105243225 is about 10258.8120657316. The cubic root of 105243225 is about 472.1333904929.

Adding to 105243225 its reverse (522342501), we get a palindrome (627585726).

The spelling of 105243225 in words is "one hundred five million, two hundred forty-three thousand, two hundred twenty-five".