425687886 has 112 divisors (see below), whose sum is σ = 1060612224. Its totient is φ = 127230912.

The previous prime is 425687881. The next prime is 425687903. The reversal of 425687886 is 688786524.

425687886 is a `hidden beast` number, since 4 + 2 + 568 + 78 + 8 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425687881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 700995 + ... + 701601.

It is an arithmetic number, because the mean of its divisors is an integer number (9469752).

Almost surely, 2^425687886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425687886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530306112).

425687886 is an abundant number, since it is smaller than the sum of its proper divisors (634924338).

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

425687886 is a wasteful number, since it uses less digits than its factorization.

425687886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 662 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 425687886 is about 20632.2050687754. The cubic root of 425687886 is about 752.2527149262.

The spelling of 425687886 in words is "four hundred twenty-five million, six hundred eighty-seven thousand, eight hundred eighty-six".