25669433 has 2 divisors, whose sum is σ = 25669434. Its totient is φ = 25669432.

The previous prime is 25669429. The next prime is 25669451. The reversal of 25669433 is 33496652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23892544 + 1776889 = 4888^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 25669433 - 2² = 25669429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25669463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12834716 + 12834717.

It is an arithmetic number, because the mean of its divisors is an integer number (12834717).

Almost surely, 2^25669433 is an apocalyptic number.

It is an amenable number.

25669433 is a deficient number, since it is larger than the sum of its proper divisors (1).

25669433 is an equidigital number, since it uses as much as digits as its factorization.

25669433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 38.

The square root of 25669433 is about 5066.5010608900. The cubic root of 25669433 is about 294.9887307770.

The spelling of 25669433 in words is "twenty-five million, six hundred sixty-nine thousand, four hundred thirty-three".