917225 has 12 divisors (see below), whose sum is σ = 1197840. Its totient is φ = 694800.

The previous prime is 917219. The next prime is 917227. The reversal of 917225 is 522719.

917225 = T₁₆₆ + T₁₆₇ + ... + T₂₁₅.

It is not a de Polignac number, because 917225 - 2⁴ = 917209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 917194 and 917203.

It is not an unprimeable number, because it can be changed into a prime (917227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491 + ... + 1440.

It is an arithmetic number, because the mean of its divisors is an integer number (99820).

2⁹¹⁷²²⁵ is an apocalyptic number.

917225 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

917225 is a deficient number, since it is larger than the sum of its proper divisors (280615).

917225 is a wasteful number, since it uses less digits than its factorization.

917225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960 (or 1955 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 917225 is about 957.7186434439. The cubic root of 917225 is about 97.1609966744.

The spelling of 917225 in words is "nine hundred seventeen thousand, two hundred twenty-five".