68531506925 has 24 divisors (see below), whose sum is σ = 99377526336. Its totient is φ = 45900167040.

The previous prime is 68531506913. The next prime is 68531506931. The reversal of 68531506925 is 52960513586.

It is not a de Polignac number, because 68531506925 - 2⁴ = 68531506909 is a prime.

It is a super-2 number, since 2×68531506925² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4546064 + ... + 4561113.

It is an arithmetic number, because the mean of its divisors is an integer number (4140730264).

Almost surely, 2^68531506925 is an apocalyptic number.

It is an amenable number.

68531506925 is a deficient number, since it is larger than the sum of its proper divisors (30846019411).

68531506925 is a wasteful number, since it uses less digits than its factorization.

68531506925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9107237 (or 9107232 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 68531506925 in words is "sixty-eight billion, five hundred thirty-one million, five hundred six thousand, nine hundred twenty-five".