20525536352 has 48 divisors (see below), whose sum is σ = 42278423040. Its totient is φ = 9790526592.

The previous prime is 20525536349. The next prime is 20525536397. The reversal of 20525536352 is 25363552502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242153 + ... + 315735.

It is an arithmetic number, because the mean of its divisors is an integer number (880800480).

Almost surely, 2^20525536352 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 20525536352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21139211520).

20525536352 is an abundant number, since it is smaller than the sum of its proper divisors (21752886688).

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

20525536352 is a wasteful number, since it uses less digits than its factorization.

20525536352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73995 (or 73987 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 38.

The spelling of 20525536352 in words is "twenty billion, five hundred twenty-five million, five hundred thirty-six thousand, three hundred fifty-two".