1125685319 has 4 divisors (see below), whose sum is σ = 1228020360. Its totient is φ = 1023350280.

The previous prime is 1125685289. The next prime is 1125685357. The reversal of 1125685319 is 9135865211.

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

It is a cyclic number.

It is not a de Polignac number, because 1125685319 - 2⁸ = 1125685063 is a prime.

It is a super-2 number, since 2×1125685319² = 2534334874824263522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1124685319) 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, 51167504 + ... + 51167525.

It is an arithmetic number, because the mean of its divisors is an integer number (307005090).

Almost surely, 2^1125685319 is an apocalyptic number.

1125685319 is a deficient number, since it is larger than the sum of its proper divisors (102335041).

1125685319 is a wasteful number, since it uses less digits than its factorization.

1125685319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102335040.

The product of its digits is 64800, while the sum is 41.

The square root of 1125685319 is about 33551.2342395924. The cubic root of 1125685319 is about 1040.2530569483.

The spelling of 1125685319 in words is "one billion, one hundred twenty-five million, six hundred eighty-five thousand, three hundred nineteen".