25561063143 has 48 divisors (see below), whose sum is σ = 46069051392. Its totient is φ = 13267800000.

The previous prime is 25561063139. The next prime is 25561063153. The reversal of 25561063143 is 34136016552.

25561063143 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 10 + 631 + 4 + 3 = 666.

It is not a de Polignac number, because 25561063143 - 2² = 25561063139 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25561063098 and 25561063107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25561063103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 887418 + ... + 915768.

It is an arithmetic number, because the mean of its divisors is an integer number (959771904).

Almost surely, 2^25561063143 is an apocalyptic number.

25561063143 is a deficient number, since it is larger than the sum of its proper divisors (20507988249).

25561063143 is a wasteful number, since it uses less digits than its factorization.

25561063143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29676 (or 29673 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 25561063143 its reverse (34136016552), we get a palindrome (59697079695).

The spelling of 25561063143 in words is "twenty-five billion, five hundred sixty-one million, sixty-three thousand, one hundred forty-three".