1255120552 has 16 divisors (see below), whose sum is σ = 2689544160. Its totient is φ = 537908784.

The previous prime is 1255120547. The next prime is 1255120561. The reversal of 1255120552 is 2550215521.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1255120552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11206378 + ... + 11206489.

It is an arithmetic number, because the mean of its divisors is an integer number (168096510).

Almost surely, 2^1255120552 is an apocalyptic number.

It is an amenable number.

1255120552 is an abundant number, since it is smaller than the sum of its proper divisors (1434423608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255120552 is a wasteful number, since it uses less digits than its factorization.

1255120552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22412880 (or 22412876 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1255120552 is about 35427.6805901826. The cubic root of 1255120552 is about 1078.6862603776.

The spelling of 1255120552 in words is "one billion, two hundred fifty-five million, one hundred twenty thousand, five hundred fifty-two".