1255523984 has 160 divisors (see below), whose sum is σ = 3059804160. Its totient is φ = 493209600.

The previous prime is 1255523981. The next prime is 1255523989. The reversal of 1255523984 is 4893255521.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (1255523981) 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, 6573329 + ... + 6573519.

It is an arithmetic number, because the mean of its divisors is an integer number (19123776).

Almost surely, 2^1255523984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255523984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529902080).

1255523984 is an abundant number, since it is smaller than the sum of its proper divisors (1804280176).

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

1255523984 is a wasteful number, since it uses less digits than its factorization.

1255523984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 234 counting only the distinct ones).

The product of its digits is 432000, while the sum is 44.

The square root of 1255523984 is about 35433.3738726642. The cubic root of 1255523984 is about 1078.8018216376.

The spelling of 1255523984 in words is "one billion, two hundred fifty-five million, five hundred twenty-three thousand, nine hundred eighty-four".