1255998744 has 512 divisors, whose sum is σ = 4841625600. Its totient is φ = 291133440.

The previous prime is 1255998727. The next prime is 1255998749. The reversal of 1255998744 is 4478995521.

It is a happy number.

1255998744 is a `hidden beast` number, since 1 + 2 + 5 + 599 + 8 + 7 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (3628800) is a multiple of the sum of its prime factors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255998749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7999914 + ... + 8000070.

It is an arithmetic number, because the mean of its divisors is an integer number (9456300).

Almost surely, 2^1255998744 is an apocalyptic number.

1255998744 is a gapful number since it is divisible by the number (14) 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 1255998744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2420812800).

1255998744 is an abundant number, since it is smaller than the sum of its proper divisors (3585626856).

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

1255998744 is a wasteful number, since it uses less digits than its factorization.

1255998744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 230 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 1255998744 is about 35440.0725732891. The cubic root of 1255998744 is about 1078.9377827758.

It can be divided in two parts, 1255 and 998744, that added together give a palindrome (999999).

The spelling of 1255998744 in words is "one billion, two hundred fifty-five million, nine hundred ninety-eight thousand, seven hundred forty-four".