1111225540 has 12 divisors (see below), whose sum is σ = 2333573676. Its totient is φ = 444490208.

The previous prime is 1111225523. The next prime is 1111225543. The reversal of 1111225540 is 455221111.

It can be written as a sum of positive squares in 2 ways, for example, as 279825984 + 831399556 = 16728^2 + 28834^2 .

It is not an unprimeable number, because it can be changed into a prime (1111225543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27780619 + ... + 27780658.

It is an arithmetic number, because the mean of its divisors is an integer number (194464473).

Almost surely, 2^1111225540 is an apocalyptic number.

1111225540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111225540 is an abundant number, since it is smaller than the sum of its proper divisors (1222348136).

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

1111225540 is a wasteful number, since it uses less digits than its factorization.

1111225540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55561286 (or 55561284 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1111225540 is about 33335.0497224768. The cubic root of 1111225540 is about 1035.7797231471.

Adding to 1111225540 its reverse (455221111), we get a palindrome (1566446651).

The spelling of 1111225540 in words is "one billion, one hundred eleven million, two hundred twenty-five thousand, five hundred forty".