109288225 has 6 divisors (see below), whose sum is σ = 135517430. Its totient is φ = 87430560.

The previous prime is 109288181. The next prime is 109288243. The reversal of 109288225 is 522882901.

It can be written as a sum of positive squares in 3 ways, for example, as 27783441 + 81504784 = 5271^2 + 9028^2 .

It is not a de Polignac number, because 109288225 - 2⁷ = 109288097 is a prime.

It is a super-2 number, since 2×109288225² = 23887832247301250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2185740 + ... + 2185789.

Almost surely, 2^109288225 is an apocalyptic number.

It is an amenable number.

109288225 is a deficient number, since it is larger than the sum of its proper divisors (26229205).

109288225 is an equidigital number, since it uses as much as digits as its factorization.

109288225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371539 (or 4371534 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 109288225 is about 10454.1008699936. The cubic root of 109288225 is about 478.1062901531.

The spelling of 109288225 in words is "one hundred nine million, two hundred eighty-eight thousand, two hundred twenty-five".