25953929 has 2 divisors, whose sum is σ = 25953930. Its totient is φ = 25953928.

The previous prime is 25953919. The next prime is 25953931. The reversal of 25953929 is 92935952.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 12411529 = 3680^2 + 3523^2 .

It is a cyclic number.

It is not a de Polignac number, because 25953929 - 2⁸ = 25953673 is a prime.

It is a Sophie Germain prime.

Together with 25953931, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25953929.

It is not a weakly prime, because it can be changed into another prime (25953919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12976964 + 12976965.

It is an arithmetic number, because the mean of its divisors is an integer number (12976965).

Almost surely, 2^25953929 is an apocalyptic number.

It is an amenable number.

25953929 is a deficient number, since it is larger than the sum of its proper divisors (1).

25953929 is an equidigital number, since it uses as much as digits as its factorization.

25953929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 44.

The square root of 25953929 is about 5094.4998773187. The cubic root of 25953929 is about 296.0745224160.

The spelling of 25953929 in words is "twenty-five million, nine hundred fifty-three thousand, nine hundred twenty-nine".