1125011387 has 2 divisors, whose sum is σ = 1125011388. Its totient is φ = 1125011386.

The previous prime is 1125011383. The next prime is 1125011453. The reversal of 1125011387 is 7831105211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125011387 - 2² = 1125011383 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125011383) 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 as a sum of consecutive naturals, namely, 562505693 + 562505694.

It is an arithmetic number, because the mean of its divisors is an integer number (562505694).

Almost surely, 2^1125011387 is an apocalyptic number.

1125011387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125011387 is an equidigital number, since it uses as much as digits as its factorization.

1125011387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1125011387 is about 33541.1894094410. The cubic root of 1125011387 is about 1040.0454205385.

Adding to 1125011387 its reverse (7831105211), we get a palindrome (8956116598).

The spelling of 1125011387 in words is "one billion, one hundred twenty-five million, eleven thousand, three hundred eighty-seven".