20025598150009 has 9 divisors (see below), whose sum is σ = 20329253083461. Its totient is φ = 19726413275580.

The previous prime is 20025598149967. The next prime is 20025598150013. The reversal of 20025598150009 is 90005189552002.

It is a happy number.

The square root of 20025598150009 is 4474997.

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

It is not a de Polignac number, because 20025598150009 - 2⁹ = 20025598149497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20025598150049) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 299791404 + ... + 299858194.

Almost surely, 2^{20025598150009} is an apocalyptic number.

20025598150009 is the 4474997-th square number.

20025598150009 is the 2237499-th centered octagonal number.

It is an amenable number.

20025598150009 is a deficient number, since it is larger than the sum of its proper divisors (303654933452).

20025598150009 is an frugal number, since it uses more digits than its factorization.

20025598150009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133716 (or 66858 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 46.

The spelling of 20025598150009 in words is "twenty trillion, twenty-five billion, five hundred ninety-eight million, one hundred fifty thousand, nine".