20675925329 has 4 divisors (see below), whose sum is σ = 20869158384. Its totient is φ = 20482692276.

The previous prime is 20675925299. The next prime is 20675925349. The reversal of 20675925329 is 92352957602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20675925329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20675925349) 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, 96616367 + ... + 96616580.

It is an arithmetic number, because the mean of its divisors is an integer number (5217289596).

Almost surely, 2^20675925329 is an apocalyptic number.

It is an amenable number.

20675925329 is a deficient number, since it is larger than the sum of its proper divisors (193233055).

20675925329 is a wasteful number, since it uses less digits than its factorization.

20675925329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193233054.

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 20675925329 in words is "twenty billion, six hundred seventy-five million, nine hundred twenty-five thousand, three hundred twenty-nine".