25252505529 has 16 divisors (see below), whose sum is σ = 35990849664. Its totient is φ = 15710288000.

The previous prime is 25252505521. The next prime is 25252505549. The reversal of 25252505529 is 92550525252.

It is not a de Polignac number, because 25252505529 - 2³ = 25252505521 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25252505521) 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 in 15 ways as a sum of consecutive naturals, for example, 4460322 + ... + 4465979.

It is an arithmetic number, because the mean of its divisors is an integer number (2249428104).

Almost surely, 2^25252505529 is an apocalyptic number.

It is an amenable number.

25252505529 is a deficient number, since it is larger than the sum of its proper divisors (10738344135).

25252505529 is a wasteful number, since it uses less digits than its factorization.

25252505529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8926368.

The product of its (nonzero) digits is 450000, while the sum is 42.

The spelling of 25252505529 in words is "twenty-five billion, two hundred fifty-two million, five hundred five thousand, five hundred twenty-nine".