68125481 has 4 divisors (see below), whose sum is σ = 68215764. Its totient is φ = 68035200.

The previous prime is 68125433. The next prime is 68125523. The reversal of 68125481 is 18452186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18452186 = 2 ⋅9226093.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 66275881 = 1360^2 + 8141^2 .

It is a cyclic number.

It is not a de Polignac number, because 68125481 - 2⁶ = 68125417 is a prime.

It is a super-2 number, since 2×68125481² = 9282162322962722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68125411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44000 + ... + 45521.

It is an arithmetic number, because the mean of its divisors is an integer number (17053941).

Almost surely, 2^68125481 is an apocalyptic number.

It is an amenable number.

68125481 is a deficient number, since it is larger than the sum of its proper divisors (90283).

68125481 is an equidigital number, since it uses as much as digits as its factorization.

68125481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90282.

The product of its digits is 15360, while the sum is 35.

The square root of 68125481 is about 8253.8161476980. The cubic root of 68125481 is about 408.4164197256.

It can be divided in two parts, 681 and 25481, that added together give a palindrome (26162).

The spelling of 68125481 in words is "sixty-eight million, one hundred twenty-five thousand, four hundred eighty-one".