1125505389 has 8 divisors (see below), whose sum is σ = 1502252352. Its totient is φ = 749547680.

The previous prime is 1125505387. The next prime is 1125505397. The reversal of 1125505389 is 9835055211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125505389 - 2¹ = 1125505387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125505387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193977 + ... + 199694.

It is an arithmetic number, because the mean of its divisors is an integer number (187781544).

Almost surely, 2^1125505389 is an apocalyptic number.

It is an amenable number.

1125505389 is a deficient number, since it is larger than the sum of its proper divisors (376746963).

1125505389 is an equidigital number, since it uses as much as digits as its factorization.

1125505389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394627.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 1125505389 is about 33548.5527109591. The cubic root of 1125505389 is about 1040.1976291708.

The spelling of 1125505389 in words is "one billion, one hundred twenty-five million, five hundred five thousand, three hundred eighty-nine".