25938137 has 2 divisors, whose sum is σ = 25938138. Its totient is φ = 25938136.

The previous prime is 25938079. The next prime is 25938139. The reversal of 25938137 is 73183952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24960016 + 978121 = 4996^2 + 989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25938137 is a prime.

Together with 25938139, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25938137.

It is not a weakly prime, because it can be changed into another prime (25938139) 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, 12969068 + 12969069.

It is an arithmetic number, because the mean of its divisors is an integer number (12969069).

Almost surely, 2^25938137 is an apocalyptic number.

It is an amenable number.

25938137 is a deficient number, since it is larger than the sum of its proper divisors (1).

25938137 is an equidigital number, since it uses as much as digits as its factorization.

25938137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 25938137 is about 5092.9497346822. The cubic root of 25938137 is about 296.0144601227.

The spelling of 25938137 in words is "twenty-five million, nine hundred thirty-eight thousand, one hundred thirty-seven".