1255331155 has 12 divisors (see below), whose sum is σ = 1631188800. Its totient is φ = 927013152.

The previous prime is 1255331113. The next prime is 1255331179. The reversal of 1255331155 is 5511335521.

It is not a de Polignac number, because 1255331155 - 2²³ = 1246942547 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 741955 + ... + 743644.

It is an arithmetic number, because the mean of its divisors is an integer number (135932400).

Almost surely, 2^1255331155 is an apocalyptic number.

1255331155 is a deficient number, since it is larger than the sum of its proper divisors (375857645).

1255331155 is a wasteful number, since it uses less digits than its factorization.

1255331155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485630 (or 1485617 counting only the distinct ones).

The product of its digits is 11250, while the sum is 31.

The square root of 1255331155 is about 35430.6527600043. The cubic root of 1255331155 is about 1078.7465897372.

Adding to 1255331155 its reverse (5511335521), we get a palindrome (6766666676).

The spelling of 1255331155 in words is "one billion, two hundred fifty-five million, three hundred thirty-one thousand, one hundred fifty-five".