20525204053 has 16 divisors (see below), whose sum is σ = 22161308400. Its totient is φ = 18969233920.

The previous prime is 20525204033. The next prime is 20525204087. The reversal of 20525204053 is 35040252502.

It can be written as a sum of positive squares in 8 ways, for example, as 5282091684 + 15243112369 = 72678^2 + 123463^2 .

It is a cyclic number.

It is not a de Polignac number, because 20525204053 - 2⁹ = 20525203541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525204023) 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 15 ways as a sum of consecutive naturals, for example, 99838 + ... + 225871.

It is an arithmetic number, because the mean of its divisors is an integer number (1385081775).

Almost surely, 2^20525204053 is an apocalyptic number.

It is an amenable number.

20525204053 is a deficient number, since it is larger than the sum of its proper divisors (1636104347).

20525204053 is a wasteful number, since it uses less digits than its factorization.

20525204053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325832.

The product of its (nonzero) digits is 12000, while the sum is 28.

Adding to 20525204053 its reverse (35040252502), we get a palindrome (55565456555).

The spelling of 20525204053 in words is "twenty billion, five hundred twenty-five million, two hundred four thousand, fifty-three".