3556725816 has 32 divisors (see below), whose sum is σ = 10162074240. Its totient is φ = 1016207328.

The previous prime is 3556725811. The next prime is 3556725847. The reversal of 3556725816 is 6185276553.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556725811) 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 7 ways as a sum of consecutive naturals, for example, 10585326 + ... + 10585661.

It is an arithmetic number, because the mean of its divisors is an integer number (317564820).

Almost surely, 2^3556725816 is an apocalyptic number.

It is an amenable number.

3556725816 is an abundant number, since it is smaller than the sum of its proper divisors (6605348424).

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

3556725816 is a wasteful number, since it uses less digits than its factorization.

3556725816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21171003 (or 21170999 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 48.

The square root of 3556725816 is about 59638.2915248249. The cubic root of 3556725816 is about 1526.4530900945.

The spelling of 3556725816 in words is "three billion, five hundred fifty-six million, seven hundred twenty-five thousand, eight hundred sixteen".