425916044856 has 160 divisors (see below), whose sum is σ = 1225360659600. Its totient is φ = 138134730240.

The previous prime is 425916044849. The next prime is 425916044887. The reversal of 425916044856 is 658440619524.

It is a happy number.

425916044856 is a `hidden beast` number, since 4 + 2 + 5 + 91 + 60 + 448 + 56 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9888375 + ... + 9931353.

Almost surely, 2^425916044856 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 425916044856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612680329800).

425916044856 is an abundant number, since it is smaller than the sum of its proper divisors (799444614744).

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

425916044856 is a wasteful number, since it uses less digits than its factorization.

425916044856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43411 (or 43398 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 425916044856 in words is "four hundred twenty-five billion, nine hundred sixteen million, forty-four thousand, eight hundred fifty-six".