25783013 has 2 divisors, whose sum is σ = 25783014. Its totient is φ = 25783012.

The previous prime is 25782997. The next prime is 25783039. The reversal of 25783013 is 31038752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25573249 + 209764 = 5057^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 25783013 - 2⁴ = 25782997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25783613) 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, 12891506 + 12891507.

It is an arithmetic number, because the mean of its divisors is an integer number (12891507).

Almost surely, 2^25783013 is an apocalyptic number.

It is an amenable number.

25783013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25783013 is an equidigital number, since it uses as much as digits as its factorization.

25783013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 25783013 is about 5077.6976081685. The cubic root of 25783013 is about 295.4231712871.

The spelling of 25783013 in words is "twenty-five million, seven hundred eighty-three thousand, thirteen".