1255011408 has 280 divisors, whose sum is σ = 4391236800. Its totient is φ = 339282432.

The previous prime is 1255011403. The next prime is 1255011419. The reversal of 1255011408 is 8041105521.

1255011408 is a `hidden beast` number, since 1 + 255 + 0 + 1 + 1 + 408 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255011403) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1550908 + ... + 1551716.

Almost surely, 2^1255011408 is an apocalyptic number.

1255011408 is a gapful number since it is divisible by the number (18) 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 1255011408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2195618400).

1255011408 is an abundant number, since it is smaller than the sum of its proper divisors (3136225392).

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

1255011408 is an equidigital number, since it uses as much as digits as its factorization.

1255011408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 1255011408 is about 35426.1401792518. The cubic root of 1255011408 is about 1078.6549923197.

Adding to 1255011408 its reverse (8041105521), we get a palindrome (9296116929).

The spelling of 1255011408 in words is "one billion, two hundred fifty-five million, eleven thousand, four hundred eight".