1255512135 has 16 divisors (see below), whose sum is σ = 2126985696. Its totient is φ = 630217728.

The previous prime is 1255512119. The next prime is 1255512197. The reversal of 1255512135 is 5312155521.

It is not a de Polignac number, because 1255512135 - 2⁴ = 1255512119 is a prime.

It is a super-2 number, since 2×1255512135² = 3152621442264516450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2461534 + ... + 2462043.

It is an arithmetic number, because the mean of its divisors is an integer number (132936606).

Almost surely, 2^1255512135 is an apocalyptic number.

1255512135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255512135 is a deficient number, since it is larger than the sum of its proper divisors (871473561).

1255512135 is a wasteful number, since it uses less digits than its factorization.

1255512135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923602.

The product of its digits is 7500, while the sum is 30.

The square root of 1255512135 is about 35433.2066711439. The cubic root of 1255512135 is about 1078.7984278984.

Adding to 1255512135 its reverse (5312155521), we get a palindrome (6567667656).

The spelling of 1255512135 in words is "one billion, two hundred fifty-five million, five hundred twelve thousand, one hundred thirty-five".