20512525544 has 32 divisors (see below), whose sum is σ = 43973582400. Its totient is φ = 8787448320.

The previous prime is 20512525531. The next prime is 20512525547. The reversal of 20512525544 is 44552521502.

It is not an unprimeable number, because it can be changed into a prime (20512525547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63224 + ... + 212184.

It is an arithmetic number, because the mean of its divisors is an integer number (1374174450).

Almost surely, 2^20512525544 is an apocalyptic number.

It is an amenable number.

20512525544 is an abundant number, since it is smaller than the sum of its proper divisors (23461056856).

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

20512525544 is a wasteful number, since it uses less digits than its factorization.

20512525544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151433 (or 151429 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 20512525544 in words is "twenty billion, five hundred twelve million, five hundred twenty-five thousand, five hundred forty-four".