1255156344 has 128 divisors (see below), whose sum is σ = 3775464000. Its totient is φ = 384072192.

The previous prime is 1255156327. The next prime is 1255156351. The reversal of 1255156344 is 4436515521.

1255156344 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 15 + 634 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1255156299 and 1255156308.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 552042 + ... + 554310.

Almost surely, 2^1255156344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255156344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887732000).

1255156344 is an abundant number, since it is smaller than the sum of its proper divisors (2520307656).

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

1255156344 is a wasteful number, since it uses less digits than its factorization.

1255156344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494 (or 2484 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 1255156344 is about 35428.1857283152. The cubic root of 1255156344 is about 1078.6965138340.

The spelling of 1255156344 in words is "one billion, two hundred fifty-five million, one hundred fifty-six thousand, three hundred forty-four".