2009125204 has 6 divisors (see below), whose sum is σ = 3515969114. Its totient is φ = 1004562600.

The previous prime is 2009125201. The next prime is 2009125213. The reversal of 2009125204 is 4025219002.

It can be written as a sum of positive squares in only one way, i.e., 1966745104 + 42380100 = 44348^2 + 6510^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009125201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251140647 + ... + 251140654.

Almost surely, 2^2009125204 is an apocalyptic number.

It is an amenable number.

2009125204 is a deficient number, since it is larger than the sum of its proper divisors (1506843910).

2009125204 is a wasteful number, since it uses less digits than its factorization.

2009125204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502281305 (or 502281303 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2009125204 is about 44823.2663245328. The cubic root of 2009125204 is about 1261.8343157822.

It can be divided in two parts, 200912 and 5204, that added together give a square (206116 = 454²).

The spelling of 2009125204 in words is "two billion, nine million, one hundred twenty-five thousand, two hundred four".