25121041529 has 2 divisors, whose sum is σ = 25121041530. Its totient is φ = 25121041528.

The previous prime is 25121041513. The next prime is 25121041591. The reversal of 25121041529 is 92514012152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13207755625 + 11913285904 = 114925^2 + 109148^2 .

It is a cyclic number.

It is not a de Polignac number, because 25121041529 - 2⁴ = 25121041513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25121041495 and 25121041504.

It is not a weakly prime, because it can be changed into another prime (25121041129) 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, 12560520764 + 12560520765.

It is an arithmetic number, because the mean of its divisors is an integer number (12560520765).

Almost surely, 2^25121041529 is an apocalyptic number.

It is an amenable number.

25121041529 is a deficient number, since it is larger than the sum of its proper divisors (1).

25121041529 is an equidigital number, since it uses as much as digits as its factorization.

25121041529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 25121041529 in words is "twenty-five billion, one hundred twenty-one million, forty-one thousand, five hundred twenty-nine".