20425464306 has 80 divisors (see below), whose sum is σ = 49321074264. Its totient is φ = 6280644096.

The previous prime is 20425464263. The next prime is 20425464361. The reversal of 20425464306 is 60346452402.

20425464306 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 5 + 4 + 643 + 0 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9989003025 + 10436461281 = 99945^2 + 102159^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5383146 + ... + 5386938.

Almost surely, 2^20425464306 is an apocalyptic number.

20425464306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20425464306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24660537132).

20425464306 is an abundant number, since it is smaller than the sum of its proper divisors (28895609958).

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

20425464306 is a wasteful number, since it uses less digits than its factorization.

20425464306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 6368 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 20425464306 in words is "twenty billion, four hundred twenty-five million, four hundred sixty-four thousand, three hundred six".