25616533 has 2 divisors, whose sum is σ = 25616534. Its totient is φ = 25616532.

The previous prime is 25616531. The next prime is 25616567. The reversal of 25616533 is 33561652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19027044 + 6589489 = 4362^2 + 2567^2 .

It is a cyclic number.

It is not a de Polignac number, because 25616533 - 2¹ = 25616531 is a prime.

Together with 25616531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25616495 and 25616504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25616531) 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, 12808266 + 12808267.

It is an arithmetic number, because the mean of its divisors is an integer number (12808267).

Almost surely, 2^25616533 is an apocalyptic number.

It is an amenable number.

25616533 is a deficient number, since it is larger than the sum of its proper divisors (1).

25616533 is an equidigital number, since it uses as much as digits as its factorization.

25616533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 31.

The square root of 25616533 is about 5061.2778030849. The cubic root of 25616533 is about 294.7859521679.

The spelling of 25616533 in words is "twenty-five million, six hundred sixteen thousand, five hundred thirty-three".