255648680 has 192 divisors, whose sum is σ = 718035840. Its totient is φ = 81489408.

The previous prime is 255648677. The next prime is 255648683. The reversal of 255648680 is 86846552.

It is an interprime number because it is at equal distance from previous prime (255648677) and next prime (255648683).

It is not an unprimeable number, because it can be changed into a prime (255648683) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2389187 + ... + 2389293.

It is an arithmetic number, because the mean of its divisors is an integer number (3739770).

Almost surely, 2^255648680 is an apocalyptic number.

255648680 is a gapful number since it is divisible by the number (20) 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 255648680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359017920).

255648680 is an abundant number, since it is smaller than the sum of its proper divisors (462387160).

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

255648680 is a wasteful number, since it uses less digits than its factorization.

255648680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 255648680 is about 15989.0174807585. The cubic root of 255648680 is about 634.6698264933.

The spelling of 255648680 in words is "two hundred fifty-five million, six hundred forty-eight thousand, six hundred eighty".