25616653 has 2 divisors, whose sum is σ = 25616654. Its totient is φ = 25616652.

The previous prime is 25616651. The next prime is 25616681. The reversal of 25616653 is 35661652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18636489 + 6980164 = 4317^2 + 2642^2 .

It is a cyclic number.

It is not a de Polignac number, because 25616653 - 2¹ = 25616651 is a prime.

Together with 25616651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25616651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12808326 + 12808327.

It is an arithmetic number, because the mean of its divisors is an integer number (12808327).

Almost surely, 2^25616653 is an apocalyptic number.

It is an amenable number.

25616653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25616653 is an equidigital number, since it uses as much as digits as its factorization.

25616653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 25616653 is about 5061.2896577849. The cubic root of 25616653 is about 294.7864124729.

The spelling of 25616653 in words is "twenty-five million, six hundred sixteen thousand, six hundred fifty-three".