1005255679 has 8 divisors (see below), whose sum is σ = 1069165440. Its totient is φ = 941876736.

The previous prime is 1005255649. The next prime is 1005255683. The reversal of 1005255679 is 9765525001.

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 1005255679 - 2⁷ = 1005255551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005255619) 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, 128794 + ... + 136375.

It is an arithmetic number, because the mean of its divisors is an integer number (133645680).

Almost surely, 2^1005255679 is an apocalyptic number.

1005255679 is a deficient number, since it is larger than the sum of its proper divisors (63909761).

1005255679 is a wasteful number, since it uses less digits than its factorization.

1005255679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265409.

The product of its (nonzero) digits is 94500, while the sum is 40.

The square root of 1005255679 is about 31705.7672829408. The cubic root of 1005255679 is about 1001.7488328009.

The spelling of 1005255679 in words is "one billion, five million, two hundred fifty-five thousand, six hundred seventy-nine".