1125564299 has 4 divisors (see below), whose sum is σ = 1144641720. Its totient is φ = 1106486880.

The previous prime is 1125564277. The next prime is 1125564329. The reversal of 1125564299 is 9924655211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9924655211 = 77047 ⋅128813.

It is a cyclic number.

It is not a de Polignac number, because 1125564299 - 2¹² = 1125560203 is a prime.

It is a super-2 number, since 2×1125564299² = 2533789982366722802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125564229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9538622 + ... + 9538739.

It is an arithmetic number, because the mean of its divisors is an integer number (286160430).

Almost surely, 2^1125564299 is an apocalyptic number.

1125564299 is a deficient number, since it is larger than the sum of its proper divisors (19077421).

1125564299 is an equidigital number, since it uses as much as digits as its factorization.

1125564299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19077420.

The product of its digits is 194400, while the sum is 44.

The square root of 1125564299 is about 33549.4306807135. The cubic root of 1125564299 is about 1040.2157771584.

The spelling of 1125564299 in words is "one billion, one hundred twenty-five million, five hundred sixty-four thousand, two hundred ninety-nine".