1255120004 has 24 divisors (see below), whose sum is σ = 2208669120. Its totient is φ = 624082784.

The previous prime is 1255119997. The next prime is 1255120021. The reversal of 1255120004 is 4000215521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635162 + ... + 637134.

It is an arithmetic number, because the mean of its divisors is an integer number (92027880).

Almost surely, 2^1255120004 is an apocalyptic number.

It is an amenable number.

1255120004 is a deficient number, since it is larger than the sum of its proper divisors (953549116).

1255120004 is a wasteful number, since it uses less digits than its factorization.

1255120004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1255120004 is about 35427.6728561163. The cubic root of 1255120004 is about 1078.6861033886.

Adding to 1255120004 its reverse (4000215521), we get a palindrome (5255335525).

The spelling of 1255120004 in words is "one billion, two hundred fifty-five million, one hundred twenty thousand, four".