425609009 has 8 divisors (see below), whose sum is σ = 486773568. Its totient is φ = 364535280.

The previous prime is 425608979. The next prime is 425609021. The reversal of 425609009 is 900906524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425609009 is a prime.

It is a super-2 number, since 2×425609009² = 362286057083924162, which contains 22 as substring.

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 425609009.

It is not an unprimeable number, because it can be changed into a prime (425609099) 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, 12347 + ... + 31680.

It is an arithmetic number, because the mean of its divisors is an integer number (60846696).

Almost surely, 2^425609009 is an apocalyptic number.

It is an amenable number.

425609009 is a deficient number, since it is larger than the sum of its proper divisors (61164559).

425609009 is a wasteful number, since it uses less digits than its factorization.

425609009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45415.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 425609009 is about 20630.2934782809. The cubic root of 425609009 is about 752.2062496601.

The spelling of 425609009 in words is "four hundred twenty-five million, six hundred nine thousand, nine".