20245425684 has 48 divisors (see below), whose sum is σ = 51701776896. Its totient is φ = 6114981600.

The previous prime is 20245425671. The next prime is 20245425689. The reversal of 20245425684 is 48652454202.

It is a super-2 number, since 2×20245425684² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245425689) 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 15 ways as a sum of consecutive naturals, for example, 209272 + ... + 290319.

It is an arithmetic number, because the mean of its divisors is an integer number (1077120352).

Almost surely, 2^20245425684 is an apocalyptic number.

It is an amenable number.

20245425684 is an abundant number, since it is smaller than the sum of its proper divisors (31456351212).

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

20245425684 is a wasteful number, since it uses less digits than its factorization.

20245425684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499916 (or 499914 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 42.

Adding to 20245425684 its reverse (48652454202), we get a palindrome (68897879886).

The spelling of 20245425684 in words is "twenty billion, two hundred forty-five million, four hundred twenty-five thousand, six hundred eighty-four".