25868364732064 has 12 divisors (see below), whose sum is σ = 50928343066314. Its totient is φ = 12934182366016.

The previous prime is 25868364732037. The next prime is 25868364732097. The reversal of 25868364732064 is 46023746386852.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24422454680464 + 1445910051600 = 4941908^2 + 1202460^2 .

It is a super-2 number, since 2×25868364732064² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25868364731987 and 25868364732005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404193198907 + ... + 404193198970.

Almost surely, 2^{25868364732064} is an apocalyptic number.

It is an amenable number.

25868364732064 is a deficient number, since it is larger than the sum of its proper divisors (25059978334250).

25868364732064 is an equidigital number, since it uses as much as digits as its factorization.

25868364732064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808386397887 (or 808386397879 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 64.

The spelling of 25868364732064 in words is "twenty-five trillion, eight hundred sixty-eight billion, three hundred sixty-four million, seven hundred thirty-two thousand, sixty-four".