1125202345 has 4 divisors (see below), whose sum is σ = 1350242820. Its totient is φ = 900161872.

The previous prime is 1125202303. The next prime is 1125202357. The reversal of 1125202345 is 5432025211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 524364201 + 600838144 = 22899^2 + 24512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125202345 - 2¹⁷ = 1125071273 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112520230 + ... + 112520239.

It is an arithmetic number, because the mean of its divisors is an integer number (337560705).

Almost surely, 2^1125202345 is an apocalyptic number.

It is an amenable number.

1125202345 is a deficient number, since it is larger than the sum of its proper divisors (225040475).

1125202345 is an equidigital number, since it uses as much as digits as its factorization.

1125202345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225040474.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1125202345 is about 33544.0359080418. The cubic root of 1125202345 is about 1040.1042625377.

Adding to 1125202345 its reverse (5432025211), we get a palindrome (6557227556).

The spelling of 1125202345 in words is "one billion, one hundred twenty-five million, two hundred two thousand, three hundred forty-five".