25429305389 has 2 divisors, whose sum is σ = 25429305390. Its totient is φ = 25429305388.

The previous prime is 25429305373. The next prime is 25429305403. The reversal of 25429305389 is 98350392452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22457420164 + 2971885225 = 149858^2 + 54515^2 .

It is a cyclic number.

It is not a de Polignac number, because 25429305389 - 2⁴ = 25429305373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25429305589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12714652694 + 12714652695.

It is an arithmetic number, because the mean of its divisors is an integer number (12714652695).

Almost surely, 2^25429305389 is an apocalyptic number.

It is an amenable number.

25429305389 is a deficient number, since it is larger than the sum of its proper divisors (1).

25429305389 is an equidigital number, since it uses as much as digits as its factorization.

25429305389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 25429305389 in words is "twenty-five billion, four hundred twenty-nine million, three hundred five thousand, three hundred eighty-nine".