109999225 has 24 divisors (see below), whose sum is σ = 162668160. Its totient is φ = 72145920.

The previous prime is 109999213. The next prime is 109999229. The reversal of 109999225 is 522999901.

It is not a de Polignac number, because 109999225 - 2¹⁵ = 109966457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109999229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9640 + ... + 17689.

It is an arithmetic number, because the mean of its divisors is an integer number (6777840).

Almost surely, 2^109999225 is an apocalyptic number.

It is an amenable number.

109999225 is a deficient number, since it is larger than the sum of its proper divisors (52668935).

109999225 is a wasteful number, since it uses less digits than its factorization.

109999225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27369 (or 27364 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 109999225 is about 10488.0515349611. The cubic root of 109999225 is about 479.1408604459.

It can be divided in two parts, 109999 and 225, that added together give a square (110224 = 332²).

The spelling of 109999225 in words is "one hundred nine million, nine hundred ninety-nine thousand, two hundred twenty-five".