25345153529 has 2 divisors, whose sum is σ = 25345153530. Its totient is φ = 25345153528.

The previous prime is 25345153517. The next prime is 25345153567. The reversal of 25345153529 is 92535154352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24043603600 + 1301549929 = 155060^2 + 36077^2 .

It is a cyclic number.

It is not a de Polignac number, because 25345153529 - 2²⁰ = 25344104953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25345153529.

It is not a weakly prime, because it can be changed into another prime (25345153129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672576764 + 12672576765.

It is an arithmetic number, because the mean of its divisors is an integer number (12672576765).

Almost surely, 2^25345153529 is an apocalyptic number.

It is an amenable number.

25345153529 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345153529 is an equidigital number, since it uses as much as digits as its factorization.

25345153529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810000, while the sum is 44.

The spelling of 25345153529 in words is "twenty-five billion, three hundred forty-five million, one hundred fifty-three thousand, five hundred twenty-nine".