1145125611 has 48 divisors (see below), whose sum is σ = 2022608640. Its totient is φ = 609716160.

The previous prime is 1145125607. The next prime is 1145125651. The reversal of 1145125611 is 1165215411.

1145125611 is a `hidden beast` number, since 1 + 1 + 45 + 1 + 2 + 5 + 611 = 666.

It is not a de Polignac number, because 1145125611 - 2² = 1145125607 is a prime.

It is a super-2 number, since 2×1145125611² = 2622625329936246642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145125651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65176 + ... + 80858.

It is an arithmetic number, because the mean of its divisors is an integer number (42137680).

Almost surely, 2^1145125611 is an apocalyptic number.

1145125611 is a deficient number, since it is larger than the sum of its proper divisors (877483029).

1145125611 is a wasteful number, since it uses less digits than its factorization.

1145125611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15776 (or 15773 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 1145125611 is about 33839.7046529665. The cubic root of 1145125611 is about 1046.2072115010.

It can be divided in two parts, 1145 and 125611, that added together give a triangular number (126756 = T₅₀₃).

The spelling of 1145125611 in words is "one billion, one hundred forty-five million, one hundred twenty-five thousand, six hundred eleven".