109109925 has 36 divisors (see below), whose sum is σ = 201745024. Its totient is φ = 56311200.

The previous prime is 109109911. The next prime is 109109993. The reversal of 109109925 is 529901901.

It is not a de Polignac number, because 109109925 - 2¹¹ = 109107877 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 109109925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 847 + ... + 14796.

Almost surely, 2^109109925 is an apocalyptic number.

109109925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109109925 is a deficient number, since it is larger than the sum of its proper divisors (92635099).

109109925 is a wasteful number, since it uses less digits than its factorization.

109109925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15690 (or 15682 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 109109925 is about 10445.5696350175. The cubic root of 109109925 is about 477.8461439436.

The spelling of 109109925 in words is "one hundred nine million, one hundred nine thousand, nine hundred twenty-five".