68439725 has 12 divisors (see below), whose sum is σ = 85890336. Its totient is φ = 54090480.

The previous prime is 68439719. The next prime is 68439727. The reversal of 68439725 is 52793486.

It is not a de Polignac number, because 68439725 - 2¹⁰ = 68438701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68439727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14417 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (7157528).

Almost surely, 2^68439725 is an apocalyptic number.

It is an amenable number.

68439725 is a deficient number, since it is larger than the sum of its proper divisors (17450611).

68439725 is a wasteful number, since it uses less digits than its factorization.

68439725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33076 (or 33071 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 68439725 is about 8272.8305313236. The cubic root of 68439725 is about 409.0434272987.

The spelling of 68439725 in words is "sixty-eight million, four hundred thirty-nine thousand, seven hundred twenty-five".