6256066409 has 4 divisors (see below), whose sum is σ = 6326359380. Its totient is φ = 6185773440.

The previous prime is 6256066403. The next prime is 6256066451. The reversal of 6256066409 is 9046606526.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1448030809 + 4808035600 = 38053^2 + 69340^2 .

It is a cyclic number.

It is not a de Polignac number, because 6256066409 - 2¹² = 6256062313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6256066409.

It is not an unprimeable number, because it can be changed into a prime (6256066403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35146352 + ... + 35146529.

It is an arithmetic number, because the mean of its divisors is an integer number (1581589845).

Almost surely, 2^6256066409 is an apocalyptic number.

It is an amenable number.

6256066409 is a deficient number, since it is larger than the sum of its proper divisors (70292971).

6256066409 is an equidigital number, since it uses as much as digits as its factorization.

6256066409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70292970.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 6256066409 is about 79095.2995379624. The cubic root of 6256066409 is about 1842.6115257189.

The spelling of 6256066409 in words is "six billion, two hundred fifty-six million, sixty-six thousand, four hundred nine".