2209825057 has 6 divisors (see below), whose sum is σ = 2428981394. Its totient is φ = 2008931760.

The previous prime is 2209824973. The next prime is 2209825061. The reversal of 2209825057 is 7505289022.

It can be written as a sum of positive squares in only one way, i.e., 2074893601 + 134931456 = 45551^2 + 11616^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2209825057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2209826057) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 9131388 + ... + 9131629.

Almost surely, 2^2209825057 is an apocalyptic number.

It is an amenable number.

2209825057 is a deficient number, since it is larger than the sum of its proper divisors (219156337).

2209825057 is a wasteful number, since it uses less digits than its factorization.

2209825057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18263039 (or 18263028 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 2209825057 is about 47008.7763827139. The cubic root of 2209825057 is about 1302.5246907417.

The spelling of 2209825057 in words is "two billion, two hundred nine million, eight hundred twenty-five thousand, fifty-seven".