255656056500 has 288 divisors, whose sum is σ = 883281934080. Its totient is φ = 61863264000.

The previous prime is 255656056471. The next prime is 255656056531. The reversal of 255656056500 is 5650656552.

255656056500 is a `hidden beast` number, since 25 + 5 + 6 + 5 + 60 + 565 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3414465 + ... + 3488535.

It is an arithmetic number, because the mean of its divisors is an integer number (3066951160).

Almost surely, 2^255656056500 is an apocalyptic number.

255656056500 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 255656056500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441640967040).

255656056500 is an abundant number, since it is smaller than the sum of its proper divisors (627625877580).

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

255656056500 is a wasteful number, since it uses less digits than its factorization.

255656056500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74168 (or 74153 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 45.

The spelling of 255656056500 in words is "two hundred fifty-five billion, six hundred fifty-six million, fifty-six thousand, five hundred".