25975637 has 2 divisors, whose sum is σ = 25975638. Its totient is φ = 25975636.

The previous prime is 25975627. The next prime is 25975657. The reversal of 25975637 is 73657952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25867396 + 108241 = 5086^2 + 329^2 .

It is a cyclic number.

It is not a de Polignac number, because 25975637 - 2¹² = 25971541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25975627) 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, 12987818 + 12987819.

It is an arithmetic number, because the mean of its divisors is an integer number (12987819).

Almost surely, 2^25975637 is an apocalyptic number.

It is an amenable number.

25975637 is a deficient number, since it is larger than the sum of its proper divisors (1).

25975637 is an equidigital number, since it uses as much as digits as its factorization.

25975637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 44.

The square root of 25975637 is about 5096.6299649867. The cubic root of 25975637 is about 296.1570454983.

The spelling of 25975637 in words is "twenty-five million, nine hundred seventy-five thousand, six hundred thirty-seven".