25601003663560 has 64 divisors (see below), whose sum is σ = 62485998447600. Its totient is φ = 9383680598016.

The previous prime is 25601003663519. The next prime is 25601003663597. The reversal of 25601003663560 is 6536630010652.

It can be written as a sum of positive squares in 8 ways, for example, as 2068977299236 + 23532026364324 = 1438394^2 + 4850982^2 .

It is a super-2 number, since 2×25601003663560² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179610145 + ... + 179752624.

Almost surely, 2^{25601003663560} is an apocalyptic number.

25601003663560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25601003663560 is an abundant number, since it is smaller than the sum of its proper divisors (36884994784040).

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

25601003663560 is a wasteful number, since it uses less digits than its factorization.

25601003663560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359362930 (or 359362926 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 25601003663560 in words is "twenty-five trillion, six hundred one billion, three million, six hundred sixty-three thousand, five hundred sixty".