25129829 has 2 divisors, whose sum is σ = 25129830. Its totient is φ = 25129828.

The previous prime is 25129817. The next prime is 25129849. The reversal of 25129829 is 92892152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17850625 + 7279204 = 4225^2 + 2698^2 .

It is a cyclic number.

It is not a de Polignac number, because 25129829 - 2⁴ = 25129813 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25129792 and 25129801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25129849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12564914 + 12564915.

It is an arithmetic number, because the mean of its divisors is an integer number (12564915).

Almost surely, 2^25129829 is an apocalyptic number.

It is an amenable number.

25129829 is a deficient number, since it is larger than the sum of its proper divisors (1).

25129829 is an equidigital number, since it uses as much as digits as its factorization.

25129829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 25129829 is about 5012.9660880561. The cubic root of 25129829 is about 292.9070632105.

The spelling of 25129829 in words is "twenty-five million, one hundred twenty-nine thousand, eight hundred twenty-nine".