1255851844 has 81 divisors (see below), whose sum is σ = 2518250007. Its totient is φ = 547729728.

The previous prime is 1255851833. The next prime is 1255851847. The reversal of 1255851844 is 4481585521.

The square root of 1255851844 is 35438.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 161036100 + 1094815744 = 12690^2 + 33088^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1255851844.

It is not an unprimeable number, because it can be changed into a prime (1255851847) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 26720229 + ... + 26720275.

Almost surely, 2^1255851844 is an apocalyptic number.

1255851844 is the 35438-th square number.

It is an amenable number.

1255851844 is an abundant number, since it is smaller than the sum of its proper divisors (1262398163).

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

1255851844 is a wasteful number, since it uses less digits than its factorization.

1255851844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 91 counting only the distinct ones).

The product of its digits is 256000, while the sum is 43.

The cubic root of 1255851844 is about 1078.8957174099.

The spelling of 1255851844 in words is "one billion, two hundred fifty-five million, eight hundred fifty-one thousand, eight hundred forty-four".