20525543476 has 24 divisors (see below), whose sum is σ = 36344367360. Its totient is φ = 10141572672.

The previous prime is 20525543473. The next prime is 20525543483. The reversal of 20525543476 is 67434552502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525543473) 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 7 ways as a sum of consecutive naturals, for example, 633175 + ... + 664801.

It is an arithmetic number, because the mean of its divisors is an integer number (1514348640).

Almost surely, 2^20525543476 is an apocalyptic number.

It is an amenable number.

20525543476 is a deficient number, since it is larger than the sum of its proper divisors (15818823884).

20525543476 is a wasteful number, since it uses less digits than its factorization.

20525543476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33543 (or 33541 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 43.

It can be divided in two parts, 20525 and 543476, that added together give a square (564001 = 751²).

The spelling of 20525543476 in words is "twenty billion, five hundred twenty-five million, five hundred forty-three thousand, four hundred seventy-six".