425905689 has 16 divisors (see below), whose sum is σ = 625294080. Its totient is φ = 255710160.

The previous prime is 425905643. The next prime is 425905699. The reversal of 425905689 is 986509524.

It is not a de Polignac number, because 425905689 - 2⁹ = 425905177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425905609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56779 + ... + 63840.

It is an arithmetic number, because the mean of its divisors is an integer number (39080880).

Almost surely, 2^425905689 is an apocalyptic number.

It is an amenable number.

425905689 is a deficient number, since it is larger than the sum of its proper divisors (199388391).

425905689 is a wasteful number, since it uses less digits than its factorization.

425905689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120740.

The product of its (nonzero) digits is 777600, while the sum is 48.

The square root of 425905689 is about 20637.4826226456. The cubic root of 425905689 is about 752.3809896301.

The spelling of 425905689 in words is "four hundred twenty-five million, nine hundred five thousand, six hundred eighty-nine".