863125 has 10 divisors (see below), whose sum is σ = 1079342. Its totient is φ = 690000.

The previous prime is 863123. The next prime is 863131. The reversal of 863125 is 521368.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 357604 + 505521 = 598^2 + 711^2 .

It is not a de Polignac number, because 863125 - 2¹ = 863123 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 863125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863123) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 66 + ... + 1315.

2⁸⁶³¹²⁵ is an apocalyptic number.

It is an amenable number.

863125 is a deficient number, since it is larger than the sum of its proper divisors (216217).

863125 is an equidigital number, since it uses as much as digits as its factorization.

863125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1386 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 863125 is about 929.0452088031. The cubic root of 863125 is about 95.2119000377.

The spelling of 863125 in words is "eight hundred sixty-three thousand, one hundred twenty-five".