25864037 has 2 divisors, whose sum is σ = 25864038. Its totient is φ = 25864036.

The previous prime is 25864031. The next prime is 25864039. The reversal of 25864037 is 73046852.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25715041 + 148996 = 5071^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 25864037 - 2⁸ = 25863781 is a prime.

Together with 25864039, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25863988 and 25864006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25864031) 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, 12932018 + 12932019.

It is an arithmetic number, because the mean of its divisors is an integer number (12932019).

Almost surely, 2^25864037 is an apocalyptic number.

It is an amenable number.

25864037 is a deficient number, since it is larger than the sum of its proper divisors (1).

25864037 is an equidigital number, since it uses as much as digits as its factorization.

25864037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 25864037 is about 5085.6697690668. The cubic root of 25864037 is about 295.7323068291.

The spelling of 25864037 in words is "twenty-five million, eight hundred sixty-four thousand, thirty-seven".