208775225 has 6 divisors (see below), whose sum is σ = 258881310. Its totient is φ = 167020160.

The previous prime is 208775219. The next prime is 208775227. The reversal of 208775225 is 522577802.

It can be written as a sum of positive squares in 3 ways, for example, as 1098304 + 207676921 = 1048^2 + 14411^2 .

It is not a de Polignac number, because 208775225 - 2¹⁰ = 208774201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208775227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4175480 + ... + 4175529.

It is an arithmetic number, because the mean of its divisors is an integer number (43146885).

Almost surely, 2^208775225 is an apocalyptic number.

208775225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

208775225 is a deficient number, since it is larger than the sum of its proper divisors (50106085).

208775225 is an equidigital number, since it uses as much as digits as its factorization.

208775225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351019 (or 8351014 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 208775225 is about 14449.0561975515. The cubic root of 208775225 is about 593.2343911592.

The spelling of 208775225 in words is "two hundred eight million, seven hundred seventy-five thousand, two hundred twenty-five".