255618040 has 32 divisors (see below), whose sum is σ = 577287360. Its totient is φ = 101865600.

The previous prime is 255618029. The next prime is 255618079. The reversal of 255618040 is 40816552.

It is a junction number, because it is equal to n+sod(n) for n = 255617993 and 255618011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951 + ... + 22630.

It is an arithmetic number, because the mean of its divisors is an integer number (18040230).

Almost surely, 2^255618040 is an apocalyptic number.

255618040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255618040 is an abundant number, since it is smaller than the sum of its proper divisors (321669320).

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

255618040 is a wasteful number, since it uses less digits than its factorization.

255618040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23863 (or 23859 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 255618040 is about 15988.0592943609. The cubic root of 255618040 is about 634.6444700022.

The spelling of 255618040 in words is "two hundred fifty-five million, six hundred eighteen thousand, forty".