105515225 has 6 divisors (see below), whose sum is σ = 130838910. Its totient is φ = 84412160.

The previous prime is 105515213. The next prime is 105515233. The reversal of 105515225 is 522515501.

It can be written as a sum of positive squares in 3 ways, for example, as 2715904 + 102799321 = 1648^2 + 10139^2 .

It is not a de Polignac number, because 105515225 - 2¹⁶ = 105449689 is a prime.

It is a super-2 number, since 2×105515225² = 22266925413601250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105515194 and 105515203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2110280 + ... + 2110329.

It is an arithmetic number, because the mean of its divisors is an integer number (21806485).

Almost surely, 2^105515225 is an apocalyptic number.

It is an amenable number.

105515225 is a deficient number, since it is larger than the sum of its proper divisors (25323685).

105515225 is an equidigital number, since it uses as much as digits as its factorization.

105515225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220619 (or 4220614 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 105515225 is about 10272.0604067538. The cubic root of 105515225 is about 472.5397818376.

The spelling of 105515225 in words is "one hundred five million, five hundred fifteen thousand, two hundred twenty-five".