25561316241 has 24 divisors (see below), whose sum is σ = 37451737440. Its totient is φ = 16796638656.

The previous prime is 25561316219. The next prime is 25561316267. The reversal of 25561316241 is 14261316552.

25561316241 is a `hidden beast` number, since 2 + 5 + 5 + 613 + 16 + 24 + 1 = 666.

It is not a de Polignac number, because 25561316241 - 2¹⁰ = 25561315217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25561316196 and 25561316205.

It is not an unprimeable number, because it can be changed into a prime (25561316201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1083550 + ... + 1106888.

It is an arithmetic number, because the mean of its divisors is an integer number (1560489060).

Almost surely, 2^25561316241 is an apocalyptic number.

It is an amenable number.

25561316241 is a deficient number, since it is larger than the sum of its proper divisors (11890421199).

25561316241 is a wasteful number, since it uses less digits than its factorization.

25561316241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25085 (or 25082 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 25561316241 in words is "twenty-five billion, five hundred sixty-one million, three hundred sixteen thousand, two hundred forty-one".