109028225 has 24 divisors (see below), whose sum is σ = 146662488. Its totient is φ = 80076800.

The previous prime is 109028221. The next prime is 109028237. The reversal of 109028225 is 522820901.

It can be written as a sum of positive squares in 12 ways, for example, as 11235904 + 97792321 = 3352^2 + 9889^2 .

It is not a de Polignac number, because 109028225 - 2² = 109028221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109028221) 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, 14297 + ... + 20553.

It is an arithmetic number, because the mean of its divisors is an integer number (6110937).

Almost surely, 2^109028225 is an apocalyptic number.

It is an amenable number.

109028225 is a deficient number, since it is larger than the sum of its proper divisors (37634263).

109028225 is a wasteful number, since it uses less digits than its factorization.

109028225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325 (or 6320 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 109028225 is about 10441.6581537608. The cubic root of 109028225 is about 477.7268459719.

The spelling of 109028225 in words is "one hundred nine million, twenty-eight thousand, two hundred twenty-five".