4025784257856 has 84 divisors (see below), whose sum is σ = 11598972534292. Its totient is φ = 1334975053824.

The previous prime is 4025784257699. The next prime is 4025784257881. The reversal of 4025784257856 is 6587524875204.

4025784257856 is a `hidden beast` number, since 4 + 0 + 2 + 5 + 7 + 8 + 4 + 2 + 578 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 349422854400 + 3676361403456 = 591120^2 + 1917384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4025784257793 and 4025784257802.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17995591 + ... + 18217926.

Almost surely, 2^{4025784257856} is an apocalyptic number.

It is an amenable number.

4025784257856 is an abundant number, since it is smaller than the sum of its proper divisors (7573188276436).

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

4025784257856 is a wasteful number, since it uses less digits than its factorization.

4025784257856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36213728 (or 36213715 counting only the distinct ones).

The product of its (nonzero) digits is 150528000, while the sum is 63.

The spelling of 4025784257856 in words is "four trillion, twenty-five billion, seven hundred eighty-four million, two hundred fifty-seven thousand, eight hundred fifty-six".