855625 has 15 divisors (see below), whose sum is σ = 1098867. Its totient is φ = 666000.

The previous prime is 855619. The next prime is 855641. The reversal of 855625 is 526558.

The square root of 855625 is 925.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 284089 + 571536 = 533^2 + 756^2 .

It is not a de Polignac number, because 855625 - 2¹¹ = 853577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 23107 + ... + 23143.

2⁸⁵⁵⁶²⁵ is an apocalyptic number.

855625 is the 925-th square number.

855625 is the 463-rd centered octagonal number.

It is an amenable number.

855625 is a deficient number, since it is larger than the sum of its proper divisors (243242).

855625 is an frugal number, since it uses more digits than its factorization.

855625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 42 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The cubic root of 855625 is about 94.9353207017.

The spelling of 855625 in words is "eight hundred fifty-five thousand, six hundred twenty-five".