255618980 has 12 divisors (see below), whose sum is σ = 536799900. Its totient is φ = 102247584.

The previous prime is 255618971. The next prime is 255618983. The reversal of 255618980 is 89816552.

It can be written as a sum of positive squares in 2 ways, for example, as 203461696 + 52157284 = 14264^2 + 7222^2 .

It is not an unprimeable number, because it can be changed into a prime (255618983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6390455 + ... + 6390494.

It is an arithmetic number, because the mean of its divisors is an integer number (44733325).

Almost surely, 2^255618980 is an apocalyptic number.

255618980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255618980 is an abundant number, since it is smaller than the sum of its proper divisors (281180920).

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

255618980 is a wasteful number, since it uses less digits than its factorization.

255618980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12780958 (or 12780956 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 255618980 is about 15988.0886912726. The cubic root of 255618980 is about 634.6452479404.

The spelling of 255618980 in words is "two hundred fifty-five million, six hundred eighteen thousand, nine hundred eighty".