20020221333525 has 48 divisors (see below), whose sum is σ = 37887153352704. Its totient is φ = 9137955583680.

The previous prime is 20020221333523. The next prime is 20020221333577. The reversal of 20020221333525 is 52533312202002.

It is not a de Polignac number, because 20020221333525 - 2¹ = 20020221333523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020221333492 and 20020221333501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020221333523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29129997 + ... + 29809346.

It is an arithmetic number, because the mean of its divisors is an integer number (789315694848).

Almost surely, 2^{20020221333525} is an apocalyptic number.

20020221333525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20020221333525 is a deficient number, since it is larger than the sum of its proper divisors (17866932019179).

20020221333525 is a wasteful number, since it uses less digits than its factorization.

20020221333525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58940010 (or 58940005 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20020221333525 its reverse (52533312202002), we get a palindrome (72553533535527).

The spelling of 20020221333525 in words is "twenty trillion, twenty billion, two hundred twenty-one million, three hundred thirty-three thousand, five hundred twenty-five".