67425909 has 4 divisors (see below), whose sum is σ = 89901216. Its totient is φ = 44950604.

The previous prime is 67425907. The next prime is 67425913. The reversal of 67425909 is 90952476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67425909 - 2¹ = 67425907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67425907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11237649 + ... + 11237654.

It is an arithmetic number, because the mean of its divisors is an integer number (22475304).

Almost surely, 2^67425909 is an apocalyptic number.

It is an amenable number.

67425909 is a deficient number, since it is larger than the sum of its proper divisors (22475307).

67425909 is a wasteful number, since it uses less digits than its factorization.

67425909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22475306.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 67425909 is about 8211.3280899012. The cubic root of 67425909 is about 407.0136146786.

The spelling of 67425909 in words is "sixty-seven million, four hundred twenty-five thousand, nine hundred nine".