1555225828 has 24 divisors (see below), whose sum is σ = 2932106688. Its totient is φ = 717526176.

The previous prime is 1555225823. The next prime is 1555225831. The reversal of 1555225828 is 8285225551.

It is not an unprimeable number, because it can be changed into a prime (1555225823) 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 in 7 ways as a sum of consecutive naturals, for example, 219225 + ... + 226207.

It is an arithmetic number, because the mean of its divisors is an integer number (122171112).

Almost surely, 2^1555225828 is an apocalyptic number.

It is an amenable number.

1555225828 is a deficient number, since it is larger than the sum of its proper divisors (1376880860).

1555225828 is a wasteful number, since it uses less digits than its factorization.

1555225828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11283 (or 11281 counting only the distinct ones).

The product of its digits is 320000, while the sum is 43.

The square root of 1555225828 is about 39436.3516061007. The cubic root of 1555225828 is about 1158.5936752412.

The spelling of 1555225828 in words is "one billion, five hundred fifty-five million, two hundred twenty-five thousand, eight hundred twenty-eight".