6256645442 has 16 divisors (see below), whose sum is σ = 9724121280. Its totient is φ = 3017272752.

The previous prime is 6256645411. The next prime is 6256645459. The reversal of 6256645442 is 2445466526.

It is a super-2 number, since 2×6256645442² = 78291224373798750728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6256645393 and 6256645402.

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 7 ways as a sum of consecutive naturals, for example, 493958 + ... + 506465.

It is an arithmetic number, because the mean of its divisors is an integer number (607757580).

Almost surely, 2^6256645442 is an apocalyptic number.

6256645442 is a deficient number, since it is larger than the sum of its proper divisors (3467475838).

6256645442 is a wasteful number, since it uses less digits than its factorization.

6256645442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000537.

The product of its digits is 1382400, while the sum is 44.

The square root of 6256645442 is about 79098.9598035271. The cubic root of 6256645442 is about 1842.6683718740.

The spelling of 6256645442 in words is "six billion, two hundred fifty-six million, six hundred forty-five thousand, four hundred forty-two".