817125 has 16 divisors (see below), whose sum is σ = 1360320. Its totient is φ = 435600.

The previous prime is 817123. The next prime is 817127. The reversal of 817125 is 521718.

817125 = T₄₆ + T₄₇ + ... + T₁₇₀.

It is an interprime number because it is at equal distance from previous prime (817123) and next prime (817127).

It is not a de Polignac number, because 817125 - 2¹ = 817123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 817095 and 817104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817123) 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 15 ways as a sum of consecutive naturals, for example, 715 + ... + 1464.

It is an arithmetic number, because the mean of its divisors is an integer number (85020).

2⁸¹⁷¹²⁵ is an apocalyptic number.

It is an amenable number.

817125 is a deficient number, since it is larger than the sum of its proper divisors (543195).

817125 is a wasteful number, since it uses less digits than its factorization.

817125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197 (or 2187 counting only the distinct ones).

The product of its digits is 560, while the sum is 24.

The square root of 817125 is about 903.9496667404. The cubic root of 817125 is about 93.4894990447.

The spelling of 817125 in words is "eight hundred seventeen thousand, one hundred twenty-five".