825837829 has 4 divisors (see below), whose sum is σ = 833855776. Its totient is φ = 817819884.

The previous prime is 825837823. The next prime is 825837847. The reversal of 825837829 is 928738528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 825837829 - 2¹⁷ = 825706757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825837823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4008819 + ... + 4009024.

It is an arithmetic number, because the mean of its divisors is an integer number (208463944).

Almost surely, 2^825837829 is an apocalyptic number.

It is an amenable number.

825837829 is a deficient number, since it is larger than the sum of its proper divisors (8017947).

825837829 is a wasteful number, since it uses less digits than its factorization.

825837829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8017946.

The product of its digits is 1935360, while the sum is 52.

The square root of 825837829 is about 28737.3942625284. The cubic root of 825837829 is about 938.2061113285.

The spelling of 825837829 in words is "eight hundred twenty-five million, eight hundred thirty-seven thousand, eight hundred twenty-nine".