169225 has 12 divisors (see below), whose sum is σ = 240064. Its totient is φ = 115920.

The previous prime is 169219. The next prime is 169241. The reversal of 169225 is 522961.

169225 = T₅₆ + T₅₇ + ... + T₁₀₅.

It is not a de Polignac number, because 169225 - 2³ = 169217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169225.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309 + ... + 658.

2¹⁶⁹²²⁵ is an apocalyptic number.

It is an amenable number.

169225 is a deficient number, since it is larger than the sum of its proper divisors (70839).

169225 is an equidigital number, since it uses as much as digits as its factorization.

169225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 979 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 169225 is about 411.3696634415. The cubic root of 169225 is about 55.3122732390.

It can be divided in two parts, 169 and 225, that multiplied together give a square (38025 = 195²).

The spelling of 169225 in words is "one hundred sixty-nine thousand, two hundred twenty-five".