6256660385 has 8 divisors (see below), whose sum is σ = 7903150080. Its totient is φ = 4741889904.

The previous prime is 6256660381. The next prime is 6256660427. The reversal of 6256660385 is 5830666526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6256660385 - 2² = 6256660381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6256660381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32929697 + ... + 32929886.

It is an arithmetic number, because the mean of its divisors is an integer number (987893760).

Almost surely, 2^6256660385 is an apocalyptic number.

It is an amenable number.

6256660385 is a deficient number, since it is larger than the sum of its proper divisors (1646489695).

6256660385 is a wasteful number, since it uses less digits than its factorization.

6256660385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65859607.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The square root of 6256660385 is about 79099.0542610972. The cubic root of 6256660385 is about 1842.6698388460.

The spelling of 6256660385 in words is "six billion, two hundred fifty-six million, six hundred sixty thousand, three hundred eighty-five".