20289026625 has 32 divisors (see below), whose sum is σ = 38583936768. Its totient is φ = 9274982400.

The previous prime is 20289026581. The next prime is 20289026657. The reversal of 20289026625 is 52662098202.

It is not a de Polignac number, because 20289026625 - 2⁹ = 20289026113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3861952 + ... + 3867201.

It is an arithmetic number, because the mean of its divisors is an integer number (1205748024).

Almost surely, 2^20289026625 is an apocalyptic number.

20289026625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20289026625 is a deficient number, since it is larger than the sum of its proper divisors (18294910143).

20289026625 is an equidigital number, since it uses as much as digits as its factorization.

20289026625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7729178 (or 7729168 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 20289026625 in words is "twenty billion, two hundred eighty-nine million, twenty-six thousand, six hundred twenty-five".