1125030205 has 32 divisors (see below), whose sum is σ = 1532532960. Its totient is φ = 786938880.

The previous prime is 1125030197. The next prime is 1125030241. The reversal of 1125030205 is 5020305211.

It can be written as a sum of positive squares in 16 ways, for example, as 38800441 + 1086229764 = 6229^2 + 32958^2 .

It is not a de Polignac number, because 1125030205 - 2³ = 1125030197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94275 + ... + 105535.

It is an arithmetic number, because the mean of its divisors is an integer number (47891655).

Almost surely, 2^1125030205 is an apocalyptic number.

It is an amenable number.

1125030205 is a deficient number, since it is larger than the sum of its proper divisors (407502755).

1125030205 is a wasteful number, since it uses less digits than its factorization.

1125030205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11361.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1125030205 is about 33541.4699290296. The cubic root of 1125030205 is about 1040.0512194326.

Adding to 1125030205 its reverse (5020305211), we get a palindrome (6145335416).

The spelling of 1125030205 in words is "one billion, one hundred twenty-five million, thirty thousand, two hundred five".