1255862880 has 384 divisors, whose sum is σ = 4617164160. Its totient is φ = 322486272.

The previous prime is 1255862869. The next prime is 1255862911. The reversal of 1255862880 is 882685521.

1255862880 is a `hidden beast` number, since 12 + 5 + 5 + 8 + 628 + 8 + 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 63 ways as a sum of consecutive naturals, for example, 12946992 + ... + 12947088.

It is an arithmetic number, because the mean of its divisors is an integer number (12023865).

Almost surely, 2^1255862880 is an apocalyptic number.

1255862880 is a gapful number since it is divisible by the number (10) 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 1255862880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2308582080).

1255862880 is an abundant number, since it is smaller than the sum of its proper divisors (3361301280).

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

1255862880 is an frugal number, since it uses more digits than its factorization.

1255862880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The square root of 1255862880 is about 35438.1557082194. The cubic root of 1255862880 is about 1078.8988777239.

The spelling of 1255862880 in words is "one billion, two hundred fifty-five million, eight hundred sixty-two thousand, eight hundred eighty".