255667580 has 24 divisors (see below), whose sum is σ = 613602528. Its totient is φ = 87657408.

The previous prime is 255667579. The next prime is 255667583. The reversal of 255667580 is 85766552.

It is a super-2 number, since 2×255667580² = 130731822926112800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255667583) 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, 912959 + ... + 913238.

It is an arithmetic number, because the mean of its divisors is an integer number (25566772).

Almost surely, 2^255667580 is an apocalyptic number.

255667580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255667580 is an abundant number, since it is smaller than the sum of its proper divisors (357934948).

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

255667580 is a wasteful number, since it uses less digits than its factorization.

255667580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826213 (or 1826211 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The square root of 255667580 is about 15989.6085005231. The cubic root of 255667580 is about 634.6854663995.

The spelling of 255667580 in words is "two hundred fifty-five million, six hundred sixty-seven thousand, five hundred eighty".