20425402574 has 8 divisors (see below), whose sum is σ = 31626429888. Its totient is φ = 9883259280.

The previous prime is 20425402567. The next prime is 20425402577. The reversal of 20425402574 is 47520452402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425402577) 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 3 ways as a sum of consecutive naturals, for example, 164720927 + ... + 164721050.

It is an arithmetic number, because the mean of its divisors is an integer number (3953303736).

Almost surely, 2^20425402574 is an apocalyptic number.

20425402574 is a deficient number, since it is larger than the sum of its proper divisors (11201027314).

20425402574 is a wasteful number, since it uses less digits than its factorization.

20425402574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329442010.

The product of its (nonzero) digits is 89600, while the sum is 35.

Adding to 20425402574 its reverse (47520452402), we get a palindrome (67945854976).

The spelling of 20425402574 in words is "twenty billion, four hundred twenty-five million, four hundred two thousand, five hundred seventy-four".