20005425277 has 8 divisors (see below), whose sum is σ = 20917753920. Its totient is φ = 19096640640.

The previous prime is 20005425259. The next prime is 20005425283. The reversal of 20005425277 is 77252450002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20005425277 - 2⁷ = 20005425149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005425977) 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, 874452 + ... + 897037.

It is an arithmetic number, because the mean of its divisors is an integer number (2614719240).

Almost surely, 2^20005425277 is an apocalyptic number.

It is an amenable number.

20005425277 is a deficient number, since it is larger than the sum of its proper divisors (912328643).

20005425277 is a wasteful number, since it uses less digits than its factorization.

20005425277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772003.

The product of its (nonzero) digits is 39200, while the sum is 34.

Adding to 20005425277 its reverse (77252450002), we get a palindrome (97257875279).

The spelling of 20005425277 in words is "twenty billion, five million, four hundred twenty-five thousand, two hundred seventy-seven".