25563386041 has 4 divisors (see below), whose sum is σ = 26674837632. Its totient is φ = 24451934452.

The previous prime is 25563386039. The next prime is 25563386063. The reversal of 25563386041 is 14068336552.

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 a cyclic number.

It is not a de Polignac number, because 25563386041 - 2¹ = 25563386039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25563386071) 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 3 ways as a sum of consecutive naturals, for example, 555725761 + ... + 555725806.

It is an arithmetic number, because the mean of its divisors is an integer number (6668709408).

Almost surely, 2^25563386041 is an apocalyptic number.

It is an amenable number.

25563386041 is a deficient number, since it is larger than the sum of its proper divisors (1111451591).

25563386041 is a wasteful number, since it uses less digits than its factorization.

25563386041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111451590.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 25563386041 in words is "twenty-five billion, five hundred sixty-three million, three hundred eighty-six thousand, forty-one".