425656 has 32 divisors (see below), whose sum is σ = 996480. Its totient is φ = 165600.

The previous prime is 425653. The next prime is 425681. The reversal of 425656 is 656524.

425656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁸ + 2¹¹ + 6 + 5 + 5⁷ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425653) 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, 271 + ... + 961.

It is an arithmetic number, because the mean of its divisors is an integer number (31140).

2⁴²⁵⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498240).

425656 is an abundant number, since it is smaller than the sum of its proper divisors (570824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425656 is a wasteful number, since it uses less digits than its factorization.

425656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 711 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 425656 is about 652.4231755540. The cubic root of 425656 is about 75.2233932050.

It can be divided in two parts, 425 and 656, that added together give a triangular number (1081 = T₄₆).

The spelling of 425656 in words is "four hundred twenty-five thousand, six hundred fifty-six".