199225155 has 16 divisors (see below), whose sum is σ = 320673024. Its totient is φ = 105615840.

The previous prime is 199225139. The next prime is 199225163. The reversal of 199225155 is 551522991.

It is not a de Polignac number, because 199225155 - 2⁴ = 199225139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37261 + ... + 42270.

It is an arithmetic number, because the mean of its divisors is an integer number (20042064).

Almost surely, 2^199225155 is an apocalyptic number.

199225155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199225155 is a deficient number, since it is larger than the sum of its proper divisors (121447869).

199225155 is a wasteful number, since it uses less digits than its factorization.

199225155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79706.

The product of its digits is 40500, while the sum is 39.

The square root of 199225155 is about 14114.7141310053. The cubic root of 199225155 is about 584.0473500655.

The spelling of 199225155 in words is "one hundred ninety-nine million, two hundred twenty-five thousand, one hundred fifty-five".