255223520500 has 96 divisors (see below), whose sum is σ = 600479556768. Its totient is φ = 94205952000.

The previous prime is 255223520491. The next prime is 255223520509. The reversal of 255223520500 is 5025322552.

It is an interprime number because it is at equal distance from previous prime (255223520491) and next prime (255223520509).

It can be written as a sum of positive squares in 16 ways, for example, as 244484758116 + 10738762384 = 494454^2 + 103628^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255223520509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34972852 + ... + 34980148.

It is an arithmetic number, because the mean of its divisors is an integer number (6254995383).

Almost surely, 2^255223520500 is an apocalyptic number.

255223520500 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 255223520500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300239778384).

255223520500 is an abundant number, since it is smaller than the sum of its proper divisors (345256036268).

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

255223520500 is a wasteful number, since it uses less digits than its factorization.

255223520500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710 (or 12698 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 31.

The spelling of 255223520500 in words is "two hundred fifty-five billion, two hundred twenty-three million, five hundred twenty thousand, five hundred".