1256875000 has 64 divisors (see below), whose sum is σ = 2947258080. Its totient is φ = 502500000.

The previous prime is 1256874979. The next prime is 1256875001. The reversal of 1256875000 is 5786521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256875001) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 623995 + ... + 626005.

Almost surely, 2^1256875000 is an apocalyptic number.

1256875000 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 1256875000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473629040).

1256875000 is an abundant number, since it is smaller than the sum of its proper divisors (1690383080).

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

1256875000 is an frugal number, since it uses more digits than its factorization.

1256875000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1256875000 is about 35452.4329207461. The cubic root of 1256875000 is about 1079.1886338573.

The spelling of 1256875000 in words is "one billion, two hundred fifty-six million, eight hundred seventy-five thousand".