199783125 has 40 divisors (see below), whose sum is σ = 369881600. Its totient is φ = 106542000.

The previous prime is 199783123. The next prime is 199783159. The reversal of 199783125 is 521387991.

It is not a de Polignac number, because 199783125 - 2¹ = 199783123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199783121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10956 + ... + 22794.

It is an arithmetic number, because the mean of its divisors is an integer number (9247040).

Almost surely, 2^199783125 is an apocalyptic number.

199783125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199783125 is a deficient number, since it is larger than the sum of its proper divisors (170098475).

199783125 is an equidigital number, since it uses as much as digits as its factorization.

199783125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11868 (or 11847 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 199783125 is about 14134.4658547821. The cubic root of 199783125 is about 584.5920890750.

The spelling of 199783125 in words is "one hundred ninety-nine million, seven hundred eighty-three thousand, one hundred twenty-five".