25563411612456 has 32 divisors (see below), whose sum is σ = 63945620561760. Its totient is φ = 8516191666752.

The previous prime is 25563411612449. The next prime is 25563411612509. The reversal of 25563411612456 is 65421611436552.

It is a junction number, because it is equal to n+sod(n) for n = 25563411612399 and 25563411612408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309053875 + ... + 309136578.

It is an arithmetic number, because the mean of its divisors is an integer number (1998300642555).

Almost surely, 2^{25563411612456} is an apocalyptic number.

It is an amenable number.

25563411612456 is an abundant number, since it is smaller than the sum of its proper divisors (38382208949304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25563411612456 is a wasteful number, since it uses less digits than its factorization.

25563411612456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618192185 (or 618192181 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 51.

The spelling of 25563411612456 in words is "twenty-five trillion, five hundred sixty-three billion, four hundred eleven million, six hundred twelve thousand, four hundred fifty-six".