825140 has 12 divisors (see below), whose sum is σ = 1732836. Its totient is φ = 330048.

The previous prime is 825131. The next prime is 825161. The reversal of 825140 is 41528.

825140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 274576 + 550564 = 524^2 + 742^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 41257 = 825140 / (8 + 2 + 5 + 1 + 4 + 0).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 825140.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20609 + ... + 20648.

It is an arithmetic number, because the mean of its divisors is an integer number (144403).

2⁸²⁵¹⁴⁰ is an apocalyptic number.

It is an amenable number.

825140 is an abundant number, since it is smaller than the sum of its proper divisors (907696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825140 is a wasteful number, since it uses less digits than its factorization.

825140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41266 (or 41264 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 825140 is about 908.3721704236. The cubic root of 825140 is about 93.7941776974.

Adding to 825140 its reverse (41528), we get a palindrome (866668).

The spelling of 825140 in words is "eight hundred twenty-five thousand, one hundred forty".