1225045212 has 48 divisors (see below), whose sum is σ = 2882355840. Its totient is φ = 404945728.

The previous prime is 1225045207. The next prime is 1225045243. The reversal of 1225045212 is 2125405221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1208818 + ... + 1209830.

It is an arithmetic number, because the mean of its divisors is an integer number (60049080).

Almost surely, 2^1225045212 is an apocalyptic number.

1225045212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225045212 is an abundant number, since it is smaller than the sum of its proper divisors (1657310628).

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

1225045212 is a wasteful number, since it uses less digits than its factorization.

1225045212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1760 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1225045212 is about 35000.6458797548. The cubic root of 1225045212 is about 1070.0006440151. Note that the first 3 decimals are identical.

The spelling of 1225045212 in words is "one billion, two hundred twenty-five million, forty-five thousand, two hundred twelve".