109640625 has 28 divisors (see below), whose sum is σ = 182810160. Its totient is φ = 58450000.

The previous prime is 109640617. The next prime is 109640627. The reversal of 109640625 is 526046901.

It is not a de Polignac number, because 109640625 - 2³ = 109640617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109640627) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 45706 + ... + 48044.

Almost surely, 2^109640625 is an apocalyptic number.

109640625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109640625 is a deficient number, since it is larger than the sum of its proper divisors (73169535).

109640625 is an frugal number, since it uses more digits than its factorization.

109640625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372 (or 2347 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 109640625 is about 10470.9419347067. The cubic root of 109640625 is about 478.6196235501.

The spelling of 109640625 in words is "one hundred nine million, six hundred forty thousand, six hundred twenty-five".