25000030000009 has 27 divisors (see below), whose sum is σ = 25589019487213. Its totient is φ = 24424534654712.

The previous prime is 25000029999941. The next prime is 25000030000037. The reversal of 25000030000009 is 90000003000052.

The square root of 25000030000009 is 5000003.

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

It is not a de Polignac number, because 25000030000009 - 2¹¹ = 25000029997961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25000030000069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44405026362 + ... + 44405026924.

Almost surely, 2^{25000030000009} is an apocalyptic number.

25000030000009 is the 5000003-rd square number.

25000030000009 is the 2500002-nd centered octagonal number.

It is an amenable number.

25000030000009 is a deficient number, since it is larger than the sum of its proper divisors (588989487204).

25000030000009 is an frugal number, since it uses more digits than its factorization.

25000030000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The spelling of 25000030000009 in words is "twenty-five trillion, thirty million, nine", and thus it is an aban number and an uban number.