25445633 has 2 divisors, whose sum is σ = 25445634. Its totient is φ = 25445632.

The previous prime is 25445597. The next prime is 25445647. The reversal of 25445633 is 33654452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25321024 + 124609 = 5032^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 25445633 - 2⁶ = 25445569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25445633.

It is not a weakly prime, because it can be changed into another prime (25445653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12722816 + 12722817.

It is an arithmetic number, because the mean of its divisors is an integer number (12722817).

Almost surely, 2^25445633 is an apocalyptic number.

It is an amenable number.

25445633 is a deficient number, since it is larger than the sum of its proper divisors (1).

25445633 is an equidigital number, since it uses as much as digits as its factorization.

25445633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 32.

The square root of 25445633 is about 5044.3664617076. The cubic root of 25445633 is about 294.1289367659.

The spelling of 25445633 in words is "twenty-five million, four hundred forty-five thousand, six hundred thirty-three".