425657 has 8 divisors (see below), whose sum is σ = 459360. Its totient is φ = 393120.

The previous prime is 425653. The next prime is 425681. The reversal of 425657 is 756524.

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 425657 - 2² = 425653 is a prime.

It is a d-powerful number, because it can be written as 4⁸ + 2¹¹ + 6⁷ + 5 + 5⁷ + 7 .

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425657.

It is not an unprimeable number, because it can be changed into a prime (425653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (57420).

2⁴²⁵⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

425657 is a deficient number, since it is larger than the sum of its proper divisors (33703).

425657 is a wasteful number, since it uses less digits than its factorization.

425657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its digits is 8400, while the sum is 29.

The square root of 425657 is about 652.4239419273. The cubic root of 425657 is about 75.2234521127.

The spelling of 425657 in words is "four hundred twenty-five thousand, six hundred fifty-seven".