105125999 has 16 divisors (see below), whose sum is σ = 116847360. Its totient is φ = 93783360.

The previous prime is 105125989. The next prime is 105126001. The reversal of 105125999 is 999521501.

It is a de Polignac number, because none of the positive numbers 2^k-105125999 is a prime.

It is a super-2 number, since 2×105125999² = 22102951331496002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105125959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163172 + ... + 163814.

It is an arithmetic number, because the mean of its divisors is an integer number (7302960).

Almost surely, 2^105125999 is an apocalyptic number.

105125999 is a deficient number, since it is larger than the sum of its proper divisors (11721361).

105125999 is a wasteful number, since it uses less digits than its factorization.

105125999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 105125999 is about 10253.0970443081. The cubic root of 105125999 is about 471.9580288616.

The spelling of 105125999 in words is "one hundred five million, one hundred twenty-five thousand, nine hundred ninety-nine".