68281365025 has 6 divisors (see below), whose sum is σ = 84668892662. Its totient is φ = 54625092000.

The previous prime is 68281364981. The next prime is 68281365059. The reversal of 68281365025 is 52056318286.

It can be written as a sum of positive squares in 3 ways, for example, as 5780865024 + 62500500001 = 76032^2 + 250001^2 .

It is not a de Polignac number, because 68281365025 - 2¹⁷ = 68281233953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1365627276 + ... + 1365627325.

Almost surely, 2^68281365025 is an apocalyptic number.

It is an amenable number.

68281365025 is a deficient number, since it is larger than the sum of its proper divisors (16387527637).

68281365025 is a wasteful number, since it uses less digits than its factorization.

68281365025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731254611 (or 2731254606 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 68281365025 in words is "sixty-eight billion, two hundred eighty-one million, three hundred sixty-five thousand, twenty-five".