25505144541 has 16 divisors (see below), whose sum is σ = 37842763200. Its totient is φ = 16977615984.

The previous prime is 25505144531. The next prime is 25505144563. The reversal of 25505144541 is 14544150552.

25505144541 is a `hidden beast` number, since 2 + 5 + 505 + 144 + 5 + 4 + 1 = 666.

It is not a de Polignac number, because 25505144541 - 2¹¹ = 25505142493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25505144496 and 25505144505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505144531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698926 + ... + 734511.

It is an arithmetic number, because the mean of its divisors is an integer number (2365172700).

Almost surely, 2^25505144541 is an apocalyptic number.

It is an amenable number.

25505144541 is a deficient number, since it is larger than the sum of its proper divisors (12337618659).

25505144541 is a wasteful number, since it uses less digits than its factorization.

25505144541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434105 (or 1434099 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 25505144541 in words is "twenty-five billion, five hundred five million, one hundred forty-four thousand, five hundred forty-one".