1255564028 has 6 divisors (see below), whose sum is σ = 2197237056. Its totient is φ = 627782012.

The previous prime is 1255564021. The next prime is 1255564069. The reversal of 1255564028 is 8204655521.

It is a junction number, because it is equal to n+sod(n) for n = 1255563982 and 1255564000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255564021) by changing a digit.

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 as a sum of consecutive naturals, namely, 156945500 + ... + 156945507.

It is an arithmetic number, because the mean of its divisors is an integer number (366206176).

Almost surely, 2^1255564028 is an apocalyptic number.

It is an amenable number.

1255564028 is a deficient number, since it is larger than the sum of its proper divisors (941673028).

1255564028 is a wasteful number, since it uses less digits than its factorization.

1255564028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313891011 (or 313891009 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 1255564028 is about 35433.9389286599. The cubic root of 1255564028 is about 1078.8132907086.

The spelling of 1255564028 in words is "one billion, two hundred fifty-five million, five hundred sixty-four thousand, twenty-eight".