1125505215 has 12 divisors (see below), whose sum is σ = 1950875784. Its totient is φ = 600269424.

The previous prime is 1125505201. The next prime is 1125505217. The reversal of 1125505215 is 5125055211.

It is not a de Polignac number, because 1125505215 - 2⁸ = 1125504959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125505217) 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 11 ways as a sum of consecutive naturals, for example, 12505569 + ... + 12505658.

It is an arithmetic number, because the mean of its divisors is an integer number (162572982).

Almost surely, 2^1125505215 is an apocalyptic number.

1125505215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1125505215 is a deficient number, since it is larger than the sum of its proper divisors (825370569).

1125505215 is a wasteful number, since it uses less digits than its factorization.

1125505215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25011238 (or 25011235 counting only the distinct ones).

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

The square root of 1125505215 is about 33548.5501177026. The cubic root of 1125505215 is about 1040.1975755670.

The spelling of 1125505215 in words is "one billion, one hundred twenty-five million, five hundred five thousand, two hundred fifteen".