40425209 has 8 divisors (see below), whose sum is σ = 45523200. Its totient is φ = 35564400.

The previous prime is 40425193. The next prime is 40425227. The reversal of 40425209 is 90252404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40425209 - 2⁴ = 40425193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40425299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58934 + ... + 59615.

It is an arithmetic number, because the mean of its divisors is an integer number (5690400).

Almost surely, 2^40425209 is an apocalyptic number.

It is an amenable number.

40425209 is a deficient number, since it is larger than the sum of its proper divisors (5097991).

40425209 is a wasteful number, since it uses less digits than its factorization.

40425209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118591.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40425209 is about 6358.0821793997. The cubic root of 40425209 is about 343.2027491163.

The spelling of 40425209 in words is "forty million, four hundred twenty-five thousand, two hundred nine".