25500531245 has 48 divisors (see below), whose sum is σ = 35922106800. Its totient is φ = 17326826496.

The previous prime is 25500531241. The next prime is 25500531281. The reversal of 25500531245 is 54213500552.

It can be written as a sum of positive squares in 8 ways, for example, as 3786916 + 25496744329 = 1946^2 + 159677^2 .

It is not a de Polignac number, because 25500531245 - 2² = 25500531241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500531241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26757689 + ... + 26758641.

It is an arithmetic number, because the mean of its divisors is an integer number (748377225).

Almost surely, 2^25500531245 is an apocalyptic number.

It is an amenable number.

25500531245 is a deficient number, since it is larger than the sum of its proper divisors (10421575555).

25500531245 is a wasteful number, since it uses less digits than its factorization.

25500531245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854 (or 1847 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 25500531245 in words is "twenty-five billion, five hundred million, five hundred thirty-one thousand, two hundred forty-five".