20425841769 has 8 divisors (see below), whose sum is σ = 27356584192. Its totient is φ = 13556163600.

The previous prime is 20425841743. The next prime is 20425841797. The reversal of 20425841769 is 96714852402.

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

It is not a de Polignac number, because 20425841769 - 2³¹ = 18278358121 is a prime.

It is a super-2 number, since 2×20425841769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20425141769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15265282 + ... + 15266619.

It is an arithmetic number, because the mean of its divisors is an integer number (3419573024).

Almost surely, 2^20425841769 is an apocalyptic number.

It is an amenable number.

20425841769 is a deficient number, since it is larger than the sum of its proper divisors (6930742423).

20425841769 is a wasteful number, since it uses less digits than its factorization.

20425841769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30532127.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 20425841769 in words is "twenty billion, four hundred twenty-five million, eight hundred forty-one thousand, seven hundred sixty-nine".