25129523389 has 2 divisors, whose sum is σ = 25129523390. Its totient is φ = 25129523388.

The previous prime is 25129523387. The next prime is 25129523411. The reversal of 25129523389 is 98332592152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18315020889 + 6814502500 = 135333^2 + 82550^2 .

It is a cyclic number.

It is not a de Polignac number, because 25129523389 - 2¹ = 25129523387 is a prime.

Together with 25129523387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25129523383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12564761694 + 12564761695.

It is an arithmetic number, because the mean of its divisors is an integer number (12564761695).

Almost surely, 2^25129523389 is an apocalyptic number.

It is an amenable number.

25129523389 is a deficient number, since it is larger than the sum of its proper divisors (1).

25129523389 is an equidigital number, since it uses as much as digits as its factorization.

25129523389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 49.

The spelling of 25129523389 in words is "twenty-five billion, one hundred twenty-nine million, five hundred twenty-three thousand, three hundred eighty-nine".