68839794150625 has 45 divisors (see below), whose sum is σ = 87145622882703. Its totient is φ = 54361780200000.

The previous prime is 68839794150613. The next prime is 68839794150629. The reversal of 68839794150625 is 52605149793886.

The square root of 68839794150625 is 8296975.

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

It can be written as a sum of positive squares in 7 ways, for example, as 68711383728289 + 128410422336 = 8289233^2 + 358344^2 .

It is not a de Polignac number, because 68839794150625 - 2⁵ = 68839794150593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68839794150629) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 16386523525 + ... + 16386527725.

It is a 1-persistent number, because it is pandigital, but 2⋅68839794150625 = 137679588301250 is not.

Almost surely, 2^{68839794150625} is an apocalyptic number.

68839794150625 is the 8296975-th square number.

68839794150625 is the 4148488-th centered octagonal number.

It is an amenable number.

68839794150625 is a deficient number, since it is larger than the sum of its proper divisors (18305828732078).

68839794150625 is an frugal number, since it uses more digits than its factorization.

68839794150625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8580 (or 4285 counting only the distinct ones).

The product of its (nonzero) digits is 783820800, while the sum is 73.

The spelling of 68839794150625 in words is "sixty-eight trillion, eight hundred thirty-nine billion, seven hundred ninety-four million, one hundred fifty thousand, six hundred twenty-five".