825555 has 16 divisors (see below), whose sum is σ = 1350144. Its totient is φ = 430560.

The previous prime is 825553. The next prime is 825577. The reversal of 825555 is 555528.

825555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 825555 - 2¹ = 825553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (825551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120 + ... + 1290.

It is an arithmetic number, because the mean of its divisors is an integer number (84384).

2⁸²⁵⁵⁵⁵ is an apocalyptic number.

825555 is a deficient number, since it is larger than the sum of its proper divisors (524589).

825555 is a wasteful number, since it uses less digits than its factorization.

825555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226.

The product of its digits is 10000, while the sum is 30.

The square root of 825555 is about 908.6005723089. The cubic root of 825555 is about 93.8098994982.

The spelling of 825555 in words is "eight hundred twenty-five thousand, five hundred fifty-five".