861325 has 12 divisors (see below), whose sum is σ = 1080288. Its totient is φ = 681200.

The previous prime is 861317. The next prime is 861347. The reversal of 861325 is 523168.

It is a happy number.

It is not a de Polignac number, because 861325 - 2³ = 861317 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 861325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3144 + ... + 3406.

It is an arithmetic number, because the mean of its divisors is an integer number (90024).

2⁸⁶¹³²⁵ is an apocalyptic number.

It is an amenable number.

861325 is a deficient number, since it is larger than the sum of its proper divisors (218963).

861325 is a wasteful number, since it uses less digits than its factorization.

861325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 399 counting only the distinct ones).

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

The square root of 861325 is about 928.0759667182. The cubic root of 861325 is about 95.1456675709.

861325 divided by its sum of digits (25) gives a triangular number (34453 = T₂₆₂).

The spelling of 861325 in words is "eight hundred sixty-one thousand, three hundred twenty-five".