1225000002 has 16 divisors (see below), whose sum is σ = 2475258912. Its totient is φ = 404123520.

The previous prime is 1225000001. The next prime is 1225000003. The reversal of 1225000002 is 2000005221.

It is an interprime number because it is at equal distance from previous prime (1225000001) and next prime (1225000003).

It is not an unprimeable number, because it can be changed into a prime (1225000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051824 + ... + 1052987.

It is an arithmetic number, because the mean of its divisors is an integer number (154703682).

Almost surely, 2^1225000002 is an apocalyptic number.

1225000002 is an abundant number, since it is smaller than the sum of its proper divisors (1250258910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225000002 is a wasteful number, since it uses less digits than its factorization.

1225000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104913.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1225000002 is about 35000.0000285714. Note that the first 4 decimals coincide. The cubic root of 1225000002 is about 1069.9874811474.

Adding to 1225000002 its reverse (2000005221), we get a palindrome (3225005223).

The spelling of 1225000002 in words is "one billion, two hundred twenty-five million, two", and thus it is an aban number.