1255140000 has 360 divisors, whose sum is σ = 4707743040. Its totient is φ = 316224000.

The previous prime is 1255139999. The next prime is 1255140013. The reversal of 1255140000 is 415521.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3419817 + ... + 3420183.

It is an arithmetic number, because the mean of its divisors is an integer number (13077064).

Almost surely, 2^1255140000 is an apocalyptic number.

1255140000 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 1255140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2353871520).

1255140000 is an abundant number, since it is smaller than the sum of its proper divisors (3452603040).

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

1255140000 is a wasteful number, since it uses less digits than its factorization.

1255140000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1255140000 is about 35427.9550637629. The cubic root of 1255140000 is about 1078.6918317367.

Adding to 1255140000 its reverse (415521), we get a palindrome (1255555521).

The spelling of 1255140000 in words is "one billion, two hundred fifty-five million, one hundred forty thousand".