425404430409 has 8 divisors (see below), whose sum is σ = 648235322560. Its totient is φ = 243088245936.

The previous prime is 425404430393. The next prime is 425404430441. The reversal of 425404430409 is 904034404524.

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

It is not a de Polignac number, because 425404430409 - 2⁴ = 425404430393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425404430449) 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, 10128676894 + ... + 10128676935.

It is an arithmetic number, because the mean of its divisors is an integer number (81029415320).

Almost surely, 2^425404430409 is an apocalyptic number.

It is an amenable number.

425404430409 is a deficient number, since it is larger than the sum of its proper divisors (222830892151).

425404430409 is a wasteful number, since it uses less digits than its factorization.

425404430409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20257353839.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 425404430409 in words is "four hundred twenty-five billion, four hundred four million, four hundred thirty thousand, four hundred nine".