25125556005 has 24 divisors (see below), whose sum is σ = 47510143200. Its totient is φ = 12182087520.

The previous prime is 25125555967. The next prime is 25125556009. The reversal of 25125556005 is 50065552152.

25125556005 is a `hidden beast` number, since 25 + 1 + 25 + 5 + 5 + 600 + 5 = 666.

It is not a de Polignac number, because 25125556005 - 2⁶ = 25125555941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125556009) 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 23 ways as a sum of consecutive naturals, for example, 25378855 + ... + 25379844.

It is an arithmetic number, because the mean of its divisors is an integer number (1979589300).

Almost surely, 2^25125556005 is an apocalyptic number.

It is an amenable number.

25125556005 is a deficient number, since it is larger than the sum of its proper divisors (22384587195).

25125556005 is a wasteful number, since it uses less digits than its factorization.

25125556005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50758721 (or 50758718 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 25125556005 in words is "twenty-five billion, one hundred twenty-five million, five hundred fifty-six thousand, five".