25820023 has 2 divisors, whose sum is σ = 25820024. Its totient is φ = 25820022.

The previous prime is 25820021. The next prime is 25820083. The reversal of 25820023 is 32002852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25820023 - 2¹ = 25820021 is a prime.

Together with 25820021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25819976 and 25820003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25820021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12910011 + 12910012.

It is an arithmetic number, because the mean of its divisors is an integer number (12910012).

Almost surely, 2^25820023 is an apocalyptic number.

25820023 is a deficient number, since it is larger than the sum of its proper divisors (1).

25820023 is an equidigital number, since it uses as much as digits as its factorization.

25820023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25820023 is about 5081.3406695478. The cubic root of 25820023 is about 295.5644579063.

Adding to 25820023 its reverse (32002852), we get a palindrome (57822875).

The spelling of 25820023 in words is "twenty-five million, eight hundred twenty thousand, twenty-three".