1125030061 has 4 divisors (see below), whose sum is σ = 1125558652. Its totient is φ = 1124501472.

The previous prime is 1125030019. The next prime is 1125030149. The reversal of 1125030061 is 1600305211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1600305211 = 523 ⋅3059857.

It can be written as a sum of positive squares in 2 ways, for example, as 231617961 + 893412100 = 15219^2 + 29890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125030061 - 2¹⁹ = 1124505773 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 (1125030001) 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, 261090 + ... + 265363.

It is an arithmetic number, because the mean of its divisors is an integer number (281389663).

Almost surely, 2^1125030061 is an apocalyptic number.

It is an amenable number.

1125030061 is a deficient number, since it is larger than the sum of its proper divisors (528591).

1125030061 is an equidigital number, since it uses as much as digits as its factorization.

1125030061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528590.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1125030061 is about 33541.4677824331. The cubic root of 1125030061 is about 1040.0511750582.

Adding to 1125030061 its reverse (1600305211), we get a palindrome (2725335272).

The spelling of 1125030061 in words is "one billion, one hundred twenty-five million, thirty thousand, sixty-one".