1255388115 has 16 divisors (see below), whose sum is σ = 2010364416. Its totient is φ = 668959200.

The previous prime is 1255388111. The next prime is 1255388153. The reversal of 1255388115 is 5118835521.

It is a happy number.

It is not a de Polignac number, because 1255388115 - 2² = 1255388111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255388111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18171 + ... + 53300.

It is an arithmetic number, because the mean of its divisors is an integer number (125647776).

Almost surely, 2^1255388115 is an apocalyptic number.

1255388115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255388115 is a deficient number, since it is larger than the sum of its proper divisors (754976301).

1255388115 is a wasteful number, since it uses less digits than its factorization.

1255388115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72650.

The product of its digits is 48000, while the sum is 39.

The square root of 1255388115 is about 35431.4565746315. The cubic root of 1255388115 is about 1078.7629053461.

The spelling of 1255388115 in words is "one billion, two hundred fifty-five million, three hundred eighty-eight thousand, one hundred fifteen".