1255523143 has 8 divisors (see below), whose sum is σ = 1446182912. Its totient is φ = 1067688216.

The previous prime is 1255523141. The next prime is 1255523177. The reversal of 1255523143 is 3413255521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1255523143 - 2¹ = 1255523141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255523141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705255 + ... + 707032.

It is an arithmetic number, because the mean of its divisors is an integer number (180772864).

Almost surely, 2^1255523143 is an apocalyptic number.

1255523143 is a deficient number, since it is larger than the sum of its proper divisors (190659769).

1255523143 is a wasteful number, since it uses less digits than its factorization.

1255523143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412421.

The product of its digits is 18000, while the sum is 31.

The square root of 1255523143 is about 35433.3620053192. The cubic root of 1255523143 is about 1078.8015807628.

Adding to 1255523143 its reverse (3413255521), we get a palindrome (4668778664).

The spelling of 1255523143 in words is "one billion, two hundred fifty-five million, five hundred twenty-three thousand, one hundred forty-three".