255164040 has 128 divisors (see below), whose sum is σ = 879984000. Its totient is φ = 65689344.

The previous prime is 255164009. The next prime is 255164059. The reversal of 255164040 is 40461552.

255164040 is a `hidden beast` number, since 255 + 1 + 6 + 404 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 255163995 and 255164013.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27247 + ... + 35393.

It is an arithmetic number, because the mean of its divisors is an integer number (6874875).

Almost surely, 2^255164040 is an apocalyptic number.

255164040 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 255164040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439992000).

255164040 is an abundant number, since it is smaller than the sum of its proper divisors (624819960).

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

255164040 is a wasteful number, since it uses less digits than its factorization.

255164040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8196 (or 8186 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 255164040 is about 15973.8548885358. The cubic root of 255164040 is about 634.2685193085.

The spelling of 255164040 in words is "two hundred fifty-five million, one hundred sixty-four thousand, forty".