1225310009 has 24 divisors (see below), whose sum is σ = 1541838144. Its totient is φ = 953172000.

The previous prime is 1225309997. The next prime is 1225310017. The reversal of 1225310009 is 9000135221.

It is not a de Polignac number, because 1225310009 - 2¹⁶ = 1225244473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225310029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 843734 + ... + 845184.

It is an arithmetic number, because the mean of its divisors is an integer number (64243256).

Almost surely, 2^1225310009 is an apocalyptic number.

It is an amenable number.

1225310009 is a deficient number, since it is larger than the sum of its proper divisors (316528135).

1225310009 is a wasteful number, since it uses less digits than its factorization.

1225310009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477 (or 2466 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1225310009 is about 35004.4284198443. The cubic root of 1225310009 is about 1070.0777330199.

The spelling of 1225310009 in words is "one billion, two hundred twenty-five million, three hundred ten thousand, nine".