25208641 has 2 divisors, whose sum is σ = 25208642. Its totient is φ = 25208640.

The previous prime is 25208639. The next prime is 25208653. The reversal of 25208641 is 14680252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17673616 + 7535025 = 4204^2 + 2745^2 .

It is a cyclic number.

It is not a de Polignac number, because 25208641 - 2¹ = 25208639 is a prime.

Together with 25208639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25208681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12604320 + 12604321.

It is an arithmetic number, because the mean of its divisors is an integer number (12604321).

Almost surely, 2^25208641 is an apocalyptic number.

It is an amenable number.

25208641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25208641 is an equidigital number, since it uses as much as digits as its factorization.

25208641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 25208641 is about 5020.8207496384. The cubic root of 25208641 is about 293.2129480462.

Adding to 25208641 its reverse (14680252), we get a palindrome (39888893).

The spelling of 25208641 in words is "twenty-five million, two hundred eight thousand, six hundred forty-one".