1225650865 has 8 divisors (see below), whose sum is σ = 1471705920. Its totient is φ = 979904112.

The previous prime is 1225650787. The next prime is 1225650883. The reversal of 1225650865 is 5680565221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225650865 - 2⁷ = 1225650737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68235 + ... + 84304.

It is an arithmetic number, because the mean of its divisors is an integer number (183963240).

Almost surely, 2^1225650865 is an apocalyptic number.

It is an amenable number.

1225650865 is a deficient number, since it is larger than the sum of its proper divisors (246055055).

1225650865 is a wasteful number, since it uses less digits than its factorization.

1225650865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154151.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 1225650865 is about 35009.2968366975. The cubic root of 1225650865 is about 1070.1769483469.

The spelling of 1225650865 in words is "one billion, two hundred twenty-five million, six hundred fifty thousand, eight hundred sixty-five".