173396225 has 6 divisors (see below), whose sum is σ = 215011350. Its totient is φ = 138716960.

The previous prime is 173396203. The next prime is 173396239. The reversal of 173396225 is 522693371.

It is a Cunningham number, because it is equal to 13168²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 173396224 = 1^2 + 13168^2 .

It is not a de Polignac number, because 173396225 - 2¹⁸ = 173134081 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3467900 + ... + 3467949.

It is an arithmetic number, because the mean of its divisors is an integer number (35835225).

Almost surely, 2^173396225 is an apocalyptic number.

It is an amenable number.

173396225 is a deficient number, since it is larger than the sum of its proper divisors (41615125).

173396225 is an equidigital number, since it uses as much as digits as its factorization.

173396225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935859 (or 6935854 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 173396225 is about 13168.0000379708. Note that the first 4 decimals coincide. The cubic root of 173396225 is about 557.6305337596.

The spelling of 173396225 in words is "one hundred seventy-three million, three hundred ninety-six thousand, two hundred twenty-five".