25566431041 has 16 divisors (see below), whose sum is σ = 26093672640. Its totient is φ = 25043832000.

The previous prime is 25566431029. The next prime is 25566431083. The reversal of 25566431041 is 14013466552.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25566431041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25566438041) 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, 20667475 + ... + 20668711.

It is an arithmetic number, because the mean of its divisors is an integer number (1630854540).

Almost surely, 2^25566431041 is an apocalyptic number.

It is an amenable number.

25566431041 is a deficient number, since it is larger than the sum of its proper divisors (527241599).

25566431041 is a wasteful number, since it uses less digits than its factorization.

25566431041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 25566431041 its reverse (14013466552), we get a palindrome (39579897593).

The spelling of 25566431041 in words is "twenty-five billion, five hundred sixty-six million, four hundred thirty-one thousand, forty-one".