25489423829 has 2 divisors, whose sum is σ = 25489423830. Its totient is φ = 25489423828.

The previous prime is 25489423823. The next prime is 25489423831. The reversal of 25489423829 is 92832498452.

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., 16182384100 + 9307039729 = 127210^2 + 96473^2 .

It is a cyclic number.

It is not a de Polignac number, because 25489423829 - 2²⁴ = 25472646613 is a prime.

Together with 25489423831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25489423823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12744711914 + 12744711915.

It is an arithmetic number, because the mean of its divisors is an integer number (12744711915).

Almost surely, 2^25489423829 is an apocalyptic number.

It is an amenable number.

25489423829 is a deficient number, since it is larger than the sum of its proper divisors (1).

25489423829 is an equidigital number, since it uses as much as digits as its factorization.

25489423829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9953280, while the sum is 56.

The spelling of 25489423829 in words is "twenty-five billion, four hundred eighty-nine million, four hundred twenty-three thousand, eight hundred twenty-nine".