1255520312 has 32 divisors (see below), whose sum is σ = 2497910400. Its totient is φ = 589569024.

The previous prime is 1255520293. The next prime is 1255520347. The reversal of 1255520312 is 2130255521.

It is a congruent number.

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, 55508 + ... + 74780.

It is an arithmetic number, because the mean of its divisors is an integer number (78059700).

Almost surely, 2^1255520312 is an apocalyptic number.

It is an amenable number.

1255520312 is a deficient number, since it is larger than the sum of its proper divisors (1242390088).

1255520312 is a wasteful number, since it uses less digits than its factorization.

1255520312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19775 (or 19771 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1255520312 is about 35433.3220570694. The cubic root of 1255520312 is about 1078.8007699216.

Adding to 1255520312 its reverse (2130255521), we get a palindrome (3385775833).

The spelling of 1255520312 in words is "one billion, two hundred fifty-five million, five hundred twenty thousand, three hundred twelve".