20834028625 has 8 divisors (see below), whose sum is σ = 26000867880. Its totient is φ = 16667222800.

The previous prime is 20834028539. The next prime is 20834028629. The reversal of 20834028625 is 52682043802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4291953169 + 16542075456 = 65513^2 + 128616^2 .

It is not a de Polignac number, because 20834028625 - 2²⁷ = 20699810897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20834028629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83335990 + ... + 83336239.

It is an arithmetic number, because the mean of its divisors is an integer number (3250108485).

Almost surely, 2^20834028625 is an apocalyptic number.

20834028625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20834028625 is a deficient number, since it is larger than the sum of its proper divisors (5166839255).

20834028625 is an equidigital number, since it uses as much as digits as its factorization.

20834028625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166672244 (or 166672234 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 20834028625 in words is "twenty billion, eight hundred thirty-four million, twenty-eight thousand, six hundred twenty-five".