25666054041 has 4 divisors (see below), whose sum is σ = 34221405392. Its totient is φ = 17110702692.

The previous prime is 25666054021. The next prime is 25666054067. The reversal of 25666054041 is 14045066652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25666054041 - 2⁵ = 25666054009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25666054021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277675671 + ... + 4277675676.

It is an arithmetic number, because the mean of its divisors is an integer number (8555351348).

Almost surely, 2^25666054041 is an apocalyptic number.

It is an amenable number.

25666054041 is a deficient number, since it is larger than the sum of its proper divisors (8555351351).

25666054041 is an equidigital number, since it uses as much as digits as its factorization.

25666054041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555351350.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 25666054041 in words is "twenty-five billion, six hundred sixty-six million, fifty-four thousand, forty-one".