1125166061 has 4 divisors (see below), whose sum is σ = 1125248124. Its totient is φ = 1125084000.

The previous prime is 1125166057. The next prime is 1125166069. The reversal of 1125166061 is 1606615211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 254562025 + 870604036 = 15955^2 + 29506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125166061 - 2² = 1125166057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125166069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14930 + ... + 49731.

It is an arithmetic number, because the mean of its divisors is an integer number (281312031).

Almost surely, 2^1125166061 is an apocalyptic number.

It is an amenable number.

1125166061 is a deficient number, since it is larger than the sum of its proper divisors (82063).

1125166061 is an equidigital number, since it uses as much as digits as its factorization.

1125166061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82062.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1125166061 is about 33543.4950623813. The cubic root of 1125166061 is about 1040.0930824601.

The spelling of 1125166061 in words is "one billion, one hundred twenty-five million, one hundred sixty-six thousand, sixty-one".