1255340000 has 120 divisors (see below), whose sum is σ = 3223780560. Its totient is φ = 480128000.

The previous prime is 1255339973. The next prime is 1255340017. The reversal of 1255340000 is 435521.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 458636 + ... + 461364.

It is an arithmetic number, because the mean of its divisors is an integer number (26864838).

Almost surely, 2^1255340000 is an apocalyptic number.

1255340000 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 1255340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1611890280).

1255340000 is an abundant number, since it is smaller than the sum of its proper divisors (1968440560).

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

1255340000 is an equidigital number, since it uses as much as digits as its factorization.

1255340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1255340000 is about 35430.7775810805. Note that the first 3 decimals coincide. The cubic root of 1255340000 is about 1078.7491233293.

Adding to 1255340000 its reverse (435521), we get a palindrome (1255775521).

The spelling of 1255340000 in words is "one billion, two hundred fifty-five million, three hundred forty thousand".