825739 has 2 divisors, whose sum is σ = 825740. Its totient is φ = 825738.

The previous prime is 825733. The next prime is 825749. The reversal of 825739 is 937528.

825739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 825739 - 2⁷ = 825611 is a prime.

It is a super-2 number, since 2×825739² = 1363689792242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (825733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412869 + 412870.

It is an arithmetic number, because the mean of its divisors is an integer number (412870).

2⁸²⁵⁷³⁹ is an apocalyptic number.

825739 is a deficient number, since it is larger than the sum of its proper divisors (1).

825739 is an equidigital number, since it uses as much as digits as its factorization.

825739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 825739 is about 908.7018212813. The cubic root of 825739 is about 93.8168684420.

The spelling of 825739 in words is "eight hundred twenty-five thousand, seven hundred thirty-nine".