20425641420 has 48 divisors (see below), whose sum is σ = 57201510240. Its totient is φ = 5445912576.

The previous prime is 20425641419. The next prime is 20425641443. The reversal of 20425641420 is 2414652402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 373596 + ... + 424764.

It is an arithmetic number, because the mean of its divisors is an integer number (1191698130).

Almost surely, 2^20425641420 is an apocalyptic number.

20425641420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20425641420 is an abundant number, since it is smaller than the sum of its proper divisors (36775868820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20425641420 is a wasteful number, since it uses less digits than its factorization.

20425641420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57834 (or 57832 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The spelling of 20425641420 in words is "twenty billion, four hundred twenty-five million, six hundred forty-one thousand, four hundred twenty".