20525531552 has 24 divisors (see below), whose sum is σ = 41501795076. Its totient is φ = 9985393152.

The previous prime is 20525531531. The next prime is 20525531569. The reversal of 20525531552 is 25513552502.

It can be written as a sum of positive squares in 2 ways, for example, as 13924944016 + 6600587536 = 118004^2 + 81244^2 .

It is a super-3 number, since 3×20525531552³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8666693 + ... + 8669060.

Almost surely, 2^20525531552 is an apocalyptic number.

It is an amenable number.

20525531552 is an abundant number, since it is smaller than the sum of its proper divisors (20976263524).

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

20525531552 is a wasteful number, since it uses less digits than its factorization.

20525531552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17335800 (or 17335792 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

The spelling of 20525531552 in words is "twenty billion, five hundred twenty-five million, five hundred thirty-one thousand, five hundred fifty-two".