1255834995 has 32 divisors (see below), whose sum is σ = 2126995200. Its totient is φ = 631634304.

The previous prime is 1255834939. The next prime is 1255834997. The reversal of 1255834995 is 5994385521.

It is a happy number.

It is not a de Polignac number, because 1255834995 - 2²⁰ = 1254786419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255834997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14865 + ... + 52274.

It is an arithmetic number, because the mean of its divisors is an integer number (66468600).

Almost surely, 2^1255834995 is an apocalyptic number.

1255834995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255834995 is a deficient number, since it is larger than the sum of its proper divisors (871160205).

1255834995 is a wasteful number, since it uses less digits than its factorization.

1255834995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67219.

The product of its digits is 1944000, while the sum is 51.

The square root of 1255834995 is about 35437.7622741617. The cubic root of 1255834995 is about 1078.8908924259.

The spelling of 1255834995 in words is "one billion, two hundred fifty-five million, eight hundred thirty-four thousand, nine hundred ninety-five".