255449779200 has 2376 divisors, whose sum is σ = 1239114178224. Its totient is φ = 49958092800.

The previous prime is 255449779181. The next prime is 255449779201. The reversal of 255449779200 is 2977944552.

255449779200 is a `hidden beast` number, since 2 + 5 + 544 + 9 + 7 + 7 + 92 + 0 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (255449779201) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 15026457592 + ... + 15026457608.

Almost surely, 2^255449779200 is an apocalyptic number.

255449779200 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 255449779200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619557089112).

255449779200 is an abundant number, since it is smaller than the sum of its proper divisors (983664399024).

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

255449779200 is a wasteful number, since it uses less digits than its factorization.

255449779200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 255449779200 in words is "two hundred fifty-five billion, four hundred forty-nine million, seven hundred seventy-nine thousand, two hundred".