20525054502 has 64 divisors (see below), whose sum is σ = 43136064000. Its totient is φ = 6498395904.

The previous prime is 20525054491. The next prime is 20525054503. The reversal of 20525054502 is 20545052502.

It is a self number, because there is not a number n which added to its sum of digits gives 20525054502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525054503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13691749 + ... + 13693247.

It is an arithmetic number, because the mean of its divisors is an integer number (674001000).

Almost surely, 2^20525054502 is an apocalyptic number.

20525054502 is an abundant number, since it is smaller than the sum of its proper divisors (22611009498).

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

20525054502 is a wasteful number, since it uses less digits than its factorization.

20525054502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157.

The product of its (nonzero) digits is 20000, while the sum is 30.

The spelling of 20525054502 in words is "twenty billion, five hundred twenty-five million, fifty-four thousand, five hundred two".