20525228448 has 96 divisors (see below), whose sum is σ = 56684940480. Its totient is φ = 6494423040.

The previous prime is 20525228441. The next prime is 20525228453. The reversal of 20525228448 is 84482252502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (20525228441) 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, 75163 + ... + 216101.

It is an arithmetic number, because the mean of its divisors is an integer number (590468130).

Almost surely, 2^20525228448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20525228448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28342470240).

20525228448 is an abundant number, since it is smaller than the sum of its proper divisors (36159712032).

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

20525228448 is a wasteful number, since it uses less digits than its factorization.

20525228448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141030 (or 141022 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 42.

The spelling of 20525228448 in words is "twenty billion, five hundred twenty-five million, two hundred twenty-eight thousand, four hundred forty-eight".