105555225 has 24 divisors (see below), whose sum is σ = 174984832. Its totient is φ = 56145600.

The previous prime is 105555209. The next prime is 105555251. The reversal of 105555225 is 522555501.

It is not a de Polignac number, because 105555225 - 2⁴ = 105555209 is a prime.

It is a super-2 number, since 2×105555225² = 22283811049601250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 105555192 and 105555201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29904 + ... + 33246.

Almost surely, 2^105555225 is an apocalyptic number.

105555225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105555225 is a deficient number, since it is larger than the sum of its proper divisors (69429607).

105555225 is a wasteful number, since it uses less digits than its factorization.

105555225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 105555225 is about 10274.0072513114. The cubic root of 105555225 is about 472.5994863440.

It can be divided in two parts, 1055 and 55225, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 105555225 in words is "one hundred five million, five hundred fifty-five thousand, two hundred twenty-five".