68123610025 has 9 divisors (see below), whose sum is σ = 84474894693. Its totient is φ = 54497844000.

The previous prime is 68123610011. The next prime is 68123610031. The reversal of 68123610025 is 52001632186.

The square root of 68123610025 is 261005.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4072098969 + 64051511056 = 63813^2 + 253084^2 .

It is not a de Polignac number, because 68123610025 - 2⁵ = 68123609993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1278925 + ... + 1331125.

Almost surely, 2^68123610025 is an apocalyptic number.

68123610025 is the 261005-th square number.

68123610025 is the 130503-rd centered octagonal number.

It is an amenable number.

68123610025 is a deficient number, since it is larger than the sum of its proper divisors (16351284668).

68123610025 is an frugal number, since it uses more digits than its factorization.

68123610025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104412 (or 52206 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 68123610025 in words is "sixty-eight billion, one hundred twenty-three million, six hundred ten thousand, twenty-five".