255572720 has 80 divisors (see below), whose sum is σ = 642563040. Its totient is φ = 93975552.

The previous prime is 255572689. The next prime is 255572749. The reversal of 255572720 is 27275552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412571 + ... + 413189.

It is an arithmetic number, because the mean of its divisors is an integer number (8032038).

Almost surely, 2^255572720 is an apocalyptic number.

255572720 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 255572720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321281520).

255572720 is an abundant number, since it is smaller than the sum of its proper divisors (386990320).

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

255572720 is a wasteful number, since it uses less digits than its factorization.

255572720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 255572720 is about 15986.6419238063. The cubic root of 255572720 is about 634.6069611898.

The spelling of 255572720 in words is "two hundred fifty-five million, five hundred seventy-two thousand, seven hundred twenty".