869125 has 16 divisors (see below), whose sum is σ = 1151280. Its totient is φ = 652800.

The previous prime is 869119. The next prime is 869131. The reversal of 869125 is 521968.

It is an interprime number because it is at equal distance from previous prime (869119) and next prime (869131).

It can be written as a sum of positive squares in 8 ways, for example, as 39204 + 829921 = 198^2 + 911^2 .

It is not a de Polignac number, because 869125 - 2⁷ = 868997 is a prime.

It is a super-3 number, since 3×869125³ = 1969554405333984375, which contains 333 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921 + ... + 2329.

It is an arithmetic number, because the mean of its divisors is an integer number (71955).

2⁸⁶⁹¹²⁵ is an apocalyptic number.

869125 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

869125 is a deficient number, since it is larger than the sum of its proper divisors (282155).

869125 is a wasteful number, since it uses less digits than its factorization.

869125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 431 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 869125 is about 932.2687380793. The cubic root of 869125 is about 95.4320121346.

The spelling of 869125 in words is "eight hundred sixty-nine thousand, one hundred twenty-five".