1125011505 has 32 divisors (see below), whose sum is σ = 1883202048. Its totient is φ = 572902400.

The previous prime is 1125011501. The next prime is 1125011519. The reversal of 1125011505 is 5051105211.

It is not a de Polignac number, because 1125011505 - 2² = 1125011501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125011501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9445 + ... + 48365.

It is an arithmetic number, because the mean of its divisors is an integer number (58850064).

Almost surely, 2^1125011505 is an apocalyptic number.

1125011505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125011505 is a deficient number, since it is larger than the sum of its proper divisors (758190543).

1125011505 is a wasteful number, since it uses less digits than its factorization.

1125011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39017.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 1125011505 is about 33541.1911684722. The cubic root of 1125011505 is about 1040.0454569012.

Adding to 1125011505 its reverse (5051105211), we get a palindrome (6176116716).

The spelling of 1125011505 in words is "one billion, one hundred twenty-five million, eleven thousand, five hundred five".