109925999 has 4 divisors (see below), whose sum is σ = 109998336. Its totient is φ = 109853664.

The previous prime is 109925989. The next prime is 109926013. The reversal of 109925999 is 999529901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999529901 = 10667 ⋅93703.

It is a cyclic number.

It is not a de Polignac number, because 109925999 - 2⁸ = 109925743 is a prime.

It is a super-3 number, since 3×109925999³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 109925999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109925989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33839 + ... + 36944.

It is an arithmetic number, because the mean of its divisors is an integer number (27499584).

Almost surely, 2^109925999 is an apocalyptic number.

109925999 is a deficient number, since it is larger than the sum of its proper divisors (72337).

109925999 is an equidigital number, since it uses as much as digits as its factorization.

109925999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72336.

The product of its (nonzero) digits is 590490, while the sum is 53.

The square root of 109925999 is about 10484.5600289187. The cubic root of 109925999 is about 479.0345161907.

The spelling of 109925999 in words is "one hundred nine million, nine hundred twenty-five thousand, nine hundred ninety-nine".