20306125089 has 16 divisors (see below), whose sum is σ = 30140689600. Its totient is φ = 13511523168.

The previous prime is 20306125057. The next prime is 20306125097. The reversal of 20306125089 is 98052160302.

20306125089 is a `hidden beast` number, since 2 + 0 + 30 + 612 + 5 + 0 + 8 + 9 = 666.

It is not a de Polignac number, because 20306125089 - 2⁵ = 20306125057 is a prime.

It is a super-2 number, since 2×20306125089² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20306125039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704884 + ... + 733125.

It is an arithmetic number, because the mean of its divisors is an integer number (1883793100).

Almost surely, 2^20306125089 is an apocalyptic number.

It is an amenable number.

20306125089 is a deficient number, since it is larger than the sum of its proper divisors (9834564511).

20306125089 is a wasteful number, since it uses less digits than its factorization.

20306125089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438541 (or 1438535 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

It can be divided in two parts, 203061 and 25089, that added together give a triangular number (228150 = T₆₇₅).

The spelling of 20306125089 in words is "twenty billion, three hundred six million, one hundred twenty-five thousand, eighty-nine".