20525543452 has 24 divisors (see below), whose sum is σ = 36075705120. Its totient is φ = 10218274560.

The previous prime is 20525543447. The next prime is 20525543473. The reversal of 20525543452 is 25434552502.

It is a congruent number.

It is an unprimeable number.

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, 1156824 + ... + 1174432.

It is an arithmetic number, because the mean of its divisors is an integer number (1503154380).

Almost surely, 2^20525543452 is an apocalyptic number.

It is an amenable number.

20525543452 is a deficient number, since it is larger than the sum of its proper divisors (15550161668).

20525543452 is a wasteful number, since it uses less digits than its factorization.

20525543452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18861 (or 18859 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 37.

The spelling of 20525543452 in words is "twenty billion, five hundred twenty-five million, five hundred forty-three thousand, four hundred fifty-two".