2825639 has 2 divisors, whose sum is σ = 2825640. Its totient is φ = 2825638.

The previous prime is 2825567. The next prime is 2825651. The reversal of 2825639 is 9365282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2825639 - 2¹² = 2821543 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2⁵ + 8 + 2¹¹ + 5⁹ + 6⁷ + 3¹² + 9⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 2825599 and 2825608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2825239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1412819 + 1412820.

It is an arithmetic number, because the mean of its divisors is an integer number (1412820).

2^2825639 is an apocalyptic number.

2825639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2825639 is an equidigital number, since it uses as much as digits as its factorization.

2825639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 2825639 is about 1680.9637116845. The cubic root of 2825639 is about 141.3748722143.

The spelling of 2825639 in words is "two million, eight hundred twenty-five thousand, six hundred thirty-nine".