25505005525305 has 16 divisors (see below), whose sum is σ = 43208479949184. Its totient is φ = 12802512577280.

The previous prime is 25505005525253. The next prime is 25505005525343. The reversal of 25505005525305 is 50352550050552.

It is a happy number.

It is not a de Polignac number, because 25505005525305 - 2¹⁵ = 25505005492537 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 50009814501 + ... + 50009815010.

It is an arithmetic number, because the mean of its divisors is an integer number (2700529996824).

Almost surely, 2^{25505005525305} is an apocalyptic number.

It is an amenable number.

25505005525305 is a deficient number, since it is larger than the sum of its proper divisors (17703474423879).

25505005525305 is a wasteful number, since it uses less digits than its factorization.

25505005525305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100019629536.

The product of its (nonzero) digits is 937500, while the sum is 42.

Adding to 25505005525305 its reverse (50352550050552), we get a palindrome (75857555575857).

The spelling of 25505005525305 in words is "twenty-five trillion, five hundred five billion, five million, five hundred twenty-five thousand, three hundred five".