20305425252 has 48 divisors (see below), whose sum is σ = 54177130112. Its totient is φ = 5798407680.

The previous prime is 20305425251. The next prime is 20305425281. The reversal of 20305425252 is 25252450302.

It is not an unprimeable number, because it can be changed into a prime (20305425251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92802 + ... + 221862.

Almost surely, 2^20305425252 is an apocalyptic number.

It is an amenable number.

20305425252 is an abundant number, since it is smaller than the sum of its proper divisors (33871704860).

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

20305425252 is a wasteful number, since it uses less digits than its factorization.

20305425252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130948 (or 130946 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 20305425252 its reverse (25252450302), we get a palindrome (45557875554).

The spelling of 20305425252 in words is "twenty billion, three hundred five million, four hundred twenty-five thousand, two hundred fifty-two".