25239937 has 2 divisors, whose sum is σ = 25239938. Its totient is φ = 25239936.

The previous prime is 25239881. The next prime is 25239943. The reversal of 25239937 is 73993252.

It is a happy number.

25239937 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22667121 + 2572816 = 4761^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 25239937 - 2¹¹ = 25237889 is a prime.

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 25239937.

It is not a weakly prime, because it can be changed into another prime (25239967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12619968 + 12619969.

It is an arithmetic number, because the mean of its divisors is an integer number (12619969).

Almost surely, 2^25239937 is an apocalyptic number.

It is an amenable number.

25239937 is a deficient number, since it is larger than the sum of its proper divisors (1).

25239937 is an equidigital number, since it uses as much as digits as its factorization.

25239937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 25239937 is about 5023.9364048523. The cubic root of 25239937 is about 293.3342371127.

The spelling of 25239937 in words is "twenty-five million, two hundred thirty-nine thousand, nine hundred thirty-seven".