1255550000 has 60 divisors (see below), whose sum is σ = 3040711632. Its totient is φ = 502200000.

The previous prime is 1255549969. The next prime is 1255550053. The reversal of 1255550000 is 555521.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 37445 + ... + 62555.

Almost surely, 2^1255550000 is an apocalyptic number.

1255550000 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 1255550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520355816).

1255550000 is an abundant number, since it is smaller than the sum of its proper divisors (1785161632).

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

1255550000 is an frugal number, since it uses more digits than its factorization.

1255550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25144 (or 25118 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 1255550000 is about 35433.7409822897. The cubic root of 1255550000 is about 1078.8092729527.

The spelling of 1255550000 in words is "one billion, two hundred fifty-five million, five hundred fifty thousand".