68657088625 has 16 divisors (see below), whose sum is σ = 85706886096. Its totient is φ = 54911030400.

The previous prime is 68657088611. The next prime is 68657088631. The reversal of 68657088625 is 52688075686.

It can be written as a sum of positive squares in 8 ways, for example, as 9763020864 + 58894067761 = 98808^2 + 242681^2 .

It is not a de Polignac number, because 68657088625 - 2²¹ = 68654991473 is a prime.

It is a super-2 number, since 2×68657088625² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410349 + ... + 552901.

It is an arithmetic number, because the mean of its divisors is an integer number (5356680381).

Almost surely, 2^68657088625 is an apocalyptic number.

It is an amenable number.

68657088625 is a deficient number, since it is larger than the sum of its proper divisors (17049797471).

68657088625 is a wasteful number, since it uses less digits than its factorization.

68657088625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146421 (or 146411 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 68657088625 in words is "sixty-eight billion, six hundred fifty-seven million, eighty-eight thousand, six hundred twenty-five".