25554004641 has 36 divisors (see below), whose sum is σ = 40666418884. Its totient is φ = 15451223040.

The previous prime is 25554004639. The next prime is 25554004673. The reversal of 25554004641 is 14640045552.

25554004641 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 4 + 0 + 0 + 4 + 641 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11945615616 + 13608389025 = 109296^2 + 116655^2 .

It is not a de Polignac number, because 25554004641 - 2¹ = 25554004639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25554004596 and 25554004605.

It is not an unprimeable number, because it can be changed into a prime (25554004621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 444441 + ... + 498633.

Almost surely, 2^25554004641 is an apocalyptic number.

It is an amenable number.

25554004641 is a deficient number, since it is larger than the sum of its proper divisors (15112414243).

25554004641 is a wasteful number, since it uses less digits than its factorization.

25554004641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54654 (or 54640 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 25554004641 in words is "twenty-five billion, five hundred fifty-four million, four thousand, six hundred forty-one".