425771856 has 80 divisors (see below), whose sum is σ = 1261585920. Its totient is φ = 137341440.

The previous prime is 425771849. The next prime is 425771861. The reversal of 425771856 is 658177524.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2505 + ... + 29288.

It is an arithmetic number, because the mean of its divisors is an integer number (15769824).

Almost surely, 2^425771856 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 425771856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630792960).

425771856 is an abundant number, since it is smaller than the sum of its proper divisors (835814064).

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

425771856 is a wasteful number, since it uses less digits than its factorization.

425771856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31841 (or 31829 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 425771856 is about 20634.2398939239. The cubic root of 425771856 is about 752.3021740954.

The spelling of 425771856 in words is "four hundred twenty-five million, seven hundred seventy-one thousand, eight hundred fifty-six".