199692225 has 36 divisors (see below), whose sum is σ = 360012796. Its totient is φ = 105805440.

The previous prime is 199692209. The next prime is 199692247. The reversal of 199692225 is 522296991.

It can be written as a sum of positive squares in 6 ways, for example, as 1896129 + 197796096 = 1377^2 + 14064^2 .

It is not a de Polignac number, because 199692225 - 2⁴ = 199692209 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32499 + ... + 38151.

Almost surely, 2^199692225 is an apocalyptic number.

199692225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199692225 is a deficient number, since it is larger than the sum of its proper divisors (160320571).

199692225 is a wasteful number, since it uses less digits than its factorization.

199692225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826 (or 5818 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 199692225 is about 14131.2499447147. The cubic root of 199692225 is about 584.5034137806.

The spelling of 199692225 in words is "one hundred ninety-nine million, six hundred ninety-two thousand, two hundred twenty-five".