3556725813 has 12 divisors (see below), whose sum is σ = 5146048908. Its totient is φ = 2367201600.

The previous prime is 3556725811. The next prime is 3556725847. The reversal of 3556725813 is 3185276553.

3556725813 is a `hidden beast` number, since 3 + 5 + 5 + 67 + 2 + 581 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3214549809 + 342176004 = 56697^2 + 18498^2 .

It is not a de Polignac number, because 3556725813 - 2¹ = 3556725811 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323370 + ... + 334187.

It is an arithmetic number, because the mean of its divisors is an integer number (428837409).

Almost surely, 2^3556725813 is an apocalyptic number.

It is an amenable number.

3556725813 is a deficient number, since it is larger than the sum of its proper divisors (1589323095).

3556725813 is a wasteful number, since it uses less digits than its factorization.

3556725813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658164 (or 658161 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 3556725813 is about 59638.2914996733. The cubic root of 3556725813 is about 1526.4530896653.

The spelling of 3556725813 in words is "three billion, five hundred fifty-six million, seven hundred twenty-five thousand, eight hundred thirteen".