255551588385 has 16 divisors (see below), whose sum is σ = 418391438784. Its totient is φ = 133124548032.

The previous prime is 255551588363. The next prime is 255551588387. The reversal of 255551588385 is 583885155552.

It is a happy number.

It is not a de Polignac number, because 255551588385 - 2¹⁷ = 255551457313 is a prime.

It is a super-2 number, since 2×255551588385² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255551588387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198101362 + ... + 198102651.

It is an arithmetic number, because the mean of its divisors is an integer number (26149464924).

Almost surely, 2^255551588385 is an apocalyptic number.

It is an amenable number.

255551588385 is a deficient number, since it is larger than the sum of its proper divisors (162839850399).

255551588385 is a wasteful number, since it uses less digits than its factorization.

255551588385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396204064.

The product of its digits is 48000000, while the sum is 60.

The spelling of 255551588385 in words is "two hundred fifty-five billion, five hundred fifty-one million, five hundred eighty-eight thousand, three hundred eighty-five".