255555468 has 72 divisors (see below), whose sum is σ = 739878048. Its totient is φ = 72857088.

The previous prime is 255555467. The next prime is 255555473. The reversal of 255555468 is 864555552.

255555468 is a `hidden beast` number, since 2 + 55 + 55 + 546 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (255555467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163780 + ... + 165332.

It is an arithmetic number, because the mean of its divisors is an integer number (10276084).

Almost surely, 2^255555468 is an apocalyptic number.

255555468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255555468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369939024).

255555468 is an abundant number, since it is smaller than the sum of its proper divisors (484322580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255555468 is a wasteful number, since it uses less digits than its factorization.

255555468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2218 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 45.

The square root of 255555468 is about 15986.1023392195. The cubic root of 255555468 is about 634.5926815154.

The spelling of 255555468 in words is "two hundred fifty-five million, five hundred fifty-five thousand, four hundred sixty-eight".