68039725 has 12 divisors (see below), whose sum is σ = 90859636. Its totient is φ = 50244480.

The previous prime is 68039711. The next prime is 68039731. The reversal of 68039725 is 52793086.

It can be written as a sum of positive squares in 6 ways, for example, as 1503076 + 66536649 = 1226^2 + 8157^2 .

It is not a de Polignac number, because 68039725 - 2¹⁵ = 68006957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 104352 + ... + 105001.

Almost surely, 2^68039725 is an apocalyptic number.

68039725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68039725 is a deficient number, since it is larger than the sum of its proper divisors (22819911).

68039725 is a wasteful number, since it uses less digits than its factorization.

68039725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209376 (or 209371 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 68039725 is about 8248.6195814815. The cubic root of 68039725 is about 408.2449769490.

The spelling of 68039725 in words is "sixty-eight million, thirty-nine thousand, seven hundred twenty-five".