109959725 has 12 divisors (see below), whose sum is σ = 136803744. Its totient is φ = 87675120.

The previous prime is 109959721. The next prime is 109959749. The reversal of 109959725 is 527959901.

It is not a de Polignac number, because 109959725 - 2² = 109959721 is a prime.

It is a super-2 number, since 2×109959725² = 24182282244151250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109959725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109959721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512 + ... + 14838.

It is an arithmetic number, because the mean of its divisors is an integer number (11400312).

Almost surely, 2^109959725 is an apocalyptic number.

It is an amenable number.

109959725 is a deficient number, since it is larger than the sum of its proper divisors (26844019).

109959725 is a wasteful number, since it uses less digits than its factorization.

109959725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14644 (or 14639 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 47.

The square root of 109959725 is about 10486.1682706316. The cubic root of 109959725 is about 479.0835014665.

The spelling of 109959725 in words is "one hundred nine million, nine hundred fifty-nine thousand, seven hundred twenty-five".