25928882429 has 2 divisors, whose sum is σ = 25928882430. Its totient is φ = 25928882428.

The previous prime is 25928882389. The next prime is 25928882449. The reversal of 25928882429 is 92428882952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18737503225 + 7191379204 = 136885^2 + 84802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25928882429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25928882449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12964441214 + 12964441215.

It is an arithmetic number, because the mean of its divisors is an integer number (12964441215).

Almost surely, 2^25928882429 is an apocalyptic number.

It is an amenable number.

25928882429 is a deficient number, since it is larger than the sum of its proper divisors (1).

25928882429 is an equidigital number, since it uses as much as digits as its factorization.

25928882429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13271040, while the sum is 59.

The spelling of 25928882429 in words is "twenty-five billion, nine hundred twenty-eight million, eight hundred eighty-two thousand, four hundred twenty-nine".