255486780 has 36 divisors (see below), whose sum is σ = 774977112. Its totient is φ = 68129760.

The previous prime is 255486773. The next prime is 255486793. The reversal of 255486780 is 87684552.

255486780 is a `hidden beast` number, since 25 + 548 + 6 + 7 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709506 + ... + 709865.

It is an arithmetic number, because the mean of its divisors is an integer number (21527142).

Almost surely, 2^255486780 is an apocalyptic number.

255486780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255486780 is an abundant number, since it is smaller than the sum of its proper divisors (519490332).

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

255486780 is a wasteful number, since it uses less digits than its factorization.

255486780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419386 (or 1419381 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 255486780 is about 15983.9538287621. The cubic root of 255486780 is about 634.5358213117.

The spelling of 255486780 in words is "two hundred fifty-five million, four hundred eighty-six thousand, seven hundred eighty".