25503954912 has 36 divisors (see below), whose sum is σ = 72526872600. Its totient is φ = 8501318208.

The previous prime is 25503954911. The next prime is 25503954919. The reversal of 25503954912 is 21945930552.

25503954912 is a `hidden beast` number, since 2 + 5 + 503 + 9 + 54 + 91 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25503954911) 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 5 ways as a sum of consecutive naturals, for example, 44277412 + ... + 44277987.

It is an arithmetic number, because the mean of its divisors is an integer number (2014635350).

Almost surely, 2^25503954912 is an apocalyptic number.

It is an amenable number.

25503954912 is an abundant number, since it is smaller than the sum of its proper divisors (47022917688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25503954912 is a wasteful number, since it uses less digits than its factorization.

25503954912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88555415 (or 88555404 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 25503954912 in words is "twenty-five billion, five hundred three million, nine hundred fifty-four thousand, nine hundred twelve".