25657633 has 2 divisors, whose sum is σ = 25657634. Its totient is φ = 25657632.

The previous prime is 25657591. The next prime is 25657691. The reversal of 25657633 is 33675652.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23261329 + 2396304 = 4823^2 + 1548^2 .

It is a cyclic number.

It is not a de Polignac number, because 25657633 - 2¹³ = 25649441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25657592 and 25657601.

It is not a weakly prime, because it can be changed into another prime (25657033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12828816 + 12828817.

It is an arithmetic number, because the mean of its divisors is an integer number (12828817).

Almost surely, 2^25657633 is an apocalyptic number.

It is an amenable number.

25657633 is a deficient number, since it is larger than the sum of its proper divisors (1).

25657633 is an equidigital number, since it uses as much as digits as its factorization.

25657633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 37.

The square root of 25657633 is about 5065.3364152838. The cubic root of 25657633 is about 294.9435226556.

The spelling of 25657633 in words is "twenty-five million, six hundred fifty-seven thousand, six hundred thirty-three".