109278125 has 54 divisors (see below), whose sum is σ = 159485886. Its totient is φ = 74800000.

The previous prime is 109278109. The next prime is 109278151. The reversal of 109278125 is 521872901.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 9 ways, for example, as 97574884 + 11703241 = 9878^2 + 3421^2 .

It is not a de Polignac number, because 109278125 - 2⁴ = 109278109 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 6428117 + ... + 6428133.

Almost surely, 2^109278125 is an apocalyptic number.

It is an amenable number.

109278125 is a deficient number, since it is larger than the sum of its proper divisors (50207761).

109278125 is an frugal number, since it uses more digits than its factorization.

109278125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 109278125 is about 10453.6177948115. The cubic root of 109278125 is about 478.0915614475.

The spelling of 109278125 in words is "one hundred nine million, two hundred seventy-eight thousand, one hundred twenty-five".