20125089 has 6 divisors (see below), whose sum is σ = 29069586. Its totient is φ = 13416720.

The previous prime is 20125087. The next prime is 20125099. The reversal of 20125089 is 98052102.

It can be written as a sum of positive squares in only one way, i.e., 15210000 + 4915089 = 3900^2 + 2217^2 .

It is not a de Polignac number, because 20125089 - 2¹ = 20125087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20125087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1118052 + ... + 1118069.

It is an arithmetic number, because the mean of its divisors is an integer number (4844931).

Almost surely, 2^20125089 is an apocalyptic number.

It is an amenable number.

20125089 is a deficient number, since it is larger than the sum of its proper divisors (8944497).

20125089 is a wasteful number, since it uses less digits than its factorization.

20125089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236127 (or 2236124 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 20125089 is about 4486.0995307728. The cubic root of 20125089 is about 272.0064922398.

The spelling of 20125089 in words is "twenty million, one hundred twenty-five thousand, eighty-nine".