20108658425 has 6 divisors (see below), whose sum is σ = 24934736478. Its totient is φ = 16086926720.

The previous prime is 20108658407. The next prime is 20108658433. The reversal of 20108658425 is 52485680102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7236394489 + 12872263936 = 85067^2 + 113456^2 .

It is not a de Polignac number, because 20108658425 - 2¹⁴ = 20108642041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402173144 + ... + 402173193.

It is an arithmetic number, because the mean of its divisors is an integer number (4155789413).

Almost surely, 2^20108658425 is an apocalyptic number.

20108658425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20108658425 is a deficient number, since it is larger than the sum of its proper divisors (4826078053).

20108658425 is an equidigital number, since it uses as much as digits as its factorization.

20108658425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804346347 (or 804346342 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 20108658425 in words is "twenty billion, one hundred eight million, six hundred fifty-eight thousand, four hundred twenty-five".