1255478382 has 96 divisors (see below), whose sum is σ = 2917399680. Its totient is φ = 389491200.

The previous prime is 1255478359. The next prime is 1255478383. The reversal of 1255478382 is 2838745521.

1255478382 is a `hidden beast` number, since 1 + 25 + 547 + 8 + 3 + 82 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255478383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1790632 + ... + 1791332.

It is an arithmetic number, because the mean of its divisors is an integer number (30389580).

Almost surely, 2^1255478382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255478382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458699840).

1255478382 is an abundant number, since it is smaller than the sum of its proper divisors (1661921298).

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

1255478382 is a wasteful number, since it uses less digits than its factorization.

1255478382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 855 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 1255478382 is about 35432.7303774349. The cubic root of 1255478382 is about 1078.7887603934.

The spelling of 1255478382 in words is "one billion, two hundred fifty-five million, four hundred seventy-eight thousand, three hundred eighty-two".