1225814689 has 4 divisors (see below), whose sum is σ = 1337252400. Its totient is φ = 1114376980.

The previous prime is 1225814677. The next prime is 1225814713. The reversal of 1225814689 is 9864185221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9864185221 = 11 ⋅896744111.

It is a cyclic number.

It is not a de Polignac number, because 1225814689 - 2⁷ = 1225814561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225814609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55718839 + ... + 55718860.

It is an arithmetic number, because the mean of its divisors is an integer number (334313100).

Almost surely, 2^1225814689 is an apocalyptic number.

It is an amenable number.

1225814689 is a deficient number, since it is larger than the sum of its proper divisors (111437711).

1225814689 is a wasteful number, since it uses less digits than its factorization.

1225814689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111437710.

The product of its digits is 276480, while the sum is 46.

The square root of 1225814689 is about 35011.6364798905. The cubic root of 1225814689 is about 1070.2246271932.

The spelling of 1225814689 in words is "one billion, two hundred twenty-five million, eight hundred fourteen thousand, six hundred eighty-nine".