105555025 has 12 divisors (see below), whose sum is σ = 131726812. Its totient is φ = 83903040.

The previous prime is 105555019. The next prime is 105555049. The reversal of 105555025 is 520555501.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 123201 + 105431824 = 351^2 + 10268^2 .

It is not a de Polignac number, because 105555025 - 2³ = 105555017 is a prime.

It is a super-2 number, since 2×105555025² = 22283726605501250, 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 = 105554984 and 105555002.

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 11 ways as a sum of consecutive naturals, for example, 9522 + ... + 17371.

Almost surely, 2^105555025 is an apocalyptic number.

It is an amenable number.

105555025 is a deficient number, since it is larger than the sum of its proper divisors (26171787).

105555025 is a wasteful number, since it uses less digits than its factorization.

105555025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27060 (or 27055 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 105555025 is about 10273.9975180063. The cubic root of 105555025 is about 472.5991878590.

The spelling of 105555025 in words is "one hundred five million, five hundred fifty-five thousand, twenty-five".