67243725 has 18 divisors (see below), whose sum is σ = 120441386. Its totient is φ = 35863200.

The previous prime is 67243711. The next prime is 67243727. The reversal of 67243725 is 52734276.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10361961 + 56881764 = 3219^2 + 7542^2 .

It is not a de Polignac number, because 67243725 - 2⁶ = 67243661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67243725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67243727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 149206 + ... + 149655.

Almost surely, 2^67243725 is an apocalyptic number.

It is an amenable number.

67243725 is a deficient number, since it is larger than the sum of its proper divisors (53197661).

67243725 is a wasteful number, since it uses less digits than its factorization.

67243725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298877 (or 298869 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 67243725 is about 8200.2271310007. The cubic root of 67243725 is about 406.6467020418.

The spelling of 67243725 in words is "sixty-seven million, two hundred forty-three thousand, seven hundred twenty-five".