2125486609 has 3 divisors (see below), whose sum is σ = 2125532713. Its totient is φ = 2125440506.

The previous prime is 2125486577. The next prime is 2125486619. The reversal of 2125486609 is 9066845212.

The square root of 2125486609 is 46103.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2125486609 - 2⁵ = 2125486577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125486619) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23052 + ... + 69154.

Almost surely, 2^2125486609 is an apocalyptic number.

2125486609 is the 46103-rd square number.

2125486609 is the 23052-nd centered octagonal number.

It is an amenable number.

2125486609 is a deficient number, since it is larger than the sum of its proper divisors (46104).

2125486609 is an frugal number, since it uses more digits than its factorization.

2125486609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92206 (or 46103 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The cubic root of 2125486609 is about 1285.7389218601.

The spelling of 2125486609 in words is "two billion, one hundred twenty-five million, four hundred eighty-six thousand, six hundred nine".