1225774565 has 16 divisors (see below), whose sum is σ = 1543282176. Its totient is φ = 933422400.

The previous prime is 1225774553. The next prime is 1225774573. The reversal of 1225774565 is 5654775221.

It is not a de Polignac number, because 1225774565 - 2⁴ = 1225774549 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 55367 + ... + 74276.

It is an arithmetic number, because the mean of its divisors is an integer number (96455136).

Almost surely, 2^1225774565 is an apocalyptic number.

It is an amenable number.

1225774565 is a deficient number, since it is larger than the sum of its proper divisors (317507611).

1225774565 is a wasteful number, since it uses less digits than its factorization.

1225774565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129740.

The product of its digits is 588000, while the sum is 44.

The square root of 1225774565 is about 35011.0634657104. The cubic root of 1225774565 is about 1070.2129500172.

The spelling of 1225774565 in words is "one billion, two hundred twenty-five million, seven hundred seventy-four thousand, five hundred sixty-five".