1011225555 has 12 divisors (see below), whose sum is σ = 1752791040. Its totient is φ = 539320272.

The previous prime is 1011225541. The next prime is 1011225559. The reversal of 1011225555 is 5555221101.

1011225555 is a `hidden beast` number, since 101 + 1 + 2 + 2 + 5 + 555 = 666.

1011225555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011225555 - 2¹² = 1011221459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011225559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11235795 + ... + 11235884.

It is an arithmetic number, because the mean of its divisors is an integer number (146065920).

Almost surely, 2^1011225555 is an apocalyptic number.

1011225555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011225555 is a deficient number, since it is larger than the sum of its proper divisors (741565485).

1011225555 is a wasteful number, since it uses less digits than its factorization.

1011225555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22471690 (or 22471687 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 1011225555 is about 31799.7728765474. The cubic root of 1011225555 is about 1003.7279368836.

Adding to 1011225555 its reverse (5555221101), we get a palindrome (6566446656).

The spelling of 1011225555 in words is "one billion, eleven million, two hundred twenty-five thousand, five hundred fifty-five".