20425316027 has 4 divisors (see below), whose sum is σ = 21500332680. Its totient is φ = 19350299376.

The previous prime is 20425315969. The next prime is 20425316101. The reversal of 20425316027 is 72061352402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20425316027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20425315984 and 20425316002.

It is not an unprimeable number, because it can be changed into a prime (20425316227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537508298 + ... + 537508335.

It is an arithmetic number, because the mean of its divisors is an integer number (5375083170).

Almost surely, 2^20425316027 is an apocalyptic number.

20425316027 is a deficient number, since it is larger than the sum of its proper divisors (1075016653).

20425316027 is a wasteful number, since it uses less digits than its factorization.

20425316027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075016652.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 20425316027 its reverse (72061352402), we get a palindrome (92486668429).

The spelling of 20425316027 in words is "twenty billion, four hundred twenty-five million, three hundred sixteen thousand, twenty-seven".