105185025 has 36 divisors (see below), whose sum is σ = 205530000. Its totient is φ = 50997600.

The previous prime is 105185021. The next prime is 105185027. The reversal of 105185025 is 520581501.

It is not a de Polignac number, because 105185025 - 2² = 105185021 is a prime.

It is a super-2 number, since 2×105185025² = 22127778968501250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105185025.

It is not an unprimeable number, because it can be changed into a prime (105185021) 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 35 ways as a sum of consecutive naturals, for example, 18775 + ... + 23724.

Almost surely, 2^105185025 is an apocalyptic number.

105185025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105185025 is a deficient number, since it is larger than the sum of its proper divisors (100344975).

105185025 is a wasteful number, since it uses less digits than its factorization.

105185025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42526 (or 42518 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 105185025 is about 10255.9750877233. The cubic root of 105185025 is about 472.0463437810.

The spelling of 105185025 in words is "one hundred five million, one hundred eighty-five thousand, twenty-five".