825135 has 8 divisors (see below), whose sum is σ = 1320240. Its totient is φ = 440064.

The previous prime is 825131. The next prime is 825161. The reversal of 825135 is 531528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825135 - 2² = 825131 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27490 + ... + 27519.

It is an arithmetic number, because the mean of its divisors is an integer number (165030).

2⁸²⁵¹³⁵ is an apocalyptic number.

825135 is a deficient number, since it is larger than the sum of its proper divisors (495105).

825135 is a wasteful number, since it uses less digits than its factorization.

825135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55017.

The product of its digits is 1200, while the sum is 24.

The square root of 825135 is about 908.3694182435. The cubic root of 825135 is about 93.7939882460.

The spelling of 825135 in words is "eight hundred twenty-five thousand, one hundred thirty-five".