189499149225 has 27 divisors (see below), whose sum is σ = 339425727589. Its totient is φ = 101062730400.

The previous prime is 189499149197. The next prime is 189499149239. The reversal of 189499149225 is 522941994981.

The square root of 189499149225 is 435315.

It is a perfect power (a square), and thus also a powerful number.

189499149225 is a `hidden beast` number, since 1 + 89 + 49 + 9 + 1 + 492 + 25 = 666.

189499149225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45852085161 + 143647064064 = 214131^2 + 379008^2 .

It is not a de Polignac number, because 189499149225 - 2⁵ = 189499149193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6515215 + ... + 6544235.

Almost surely, 2^189499149225 is an apocalyptic number.

189499149225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189499149225 is the 435315-th square number.

189499149225 is the 217658-th centered octagonal number.

It is an amenable number.

189499149225 is a deficient number, since it is larger than the sum of its proper divisors (149926578364).

189499149225 is an frugal number, since it uses more digits than its factorization.

189499149225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58058 (or 29029 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 63.

It can be divided in two parts, 189499 and 149225, that added together give a square (338724 = 582²).

The spelling of 189499149225 in words is "one hundred eighty-nine billion, four hundred ninety-nine million, one hundred forty-nine thousand, two hundred twenty-five".