20525112020 has 48 divisors (see below), whose sum is σ = 49712234880. Its totient is φ = 6972614784.

The previous prime is 20525112001. The next prime is 20525112037. The reversal of 20525112020 is 2021152502.

It is a happy number.

It is a super-3 number, since 3×20525112020³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20525111983 and 20525112001.

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 15 ways as a sum of consecutive naturals, for example, 657254 + ... + 687773.

It is an arithmetic number, because the mean of its divisors is an integer number (1035671560).

Almost surely, 2^20525112020 is an apocalyptic number.

20525112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20525112020 is an abundant number, since it is smaller than the sum of its proper divisors (29187122860).

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

20525112020 is a wasteful number, since it uses less digits than its factorization.

20525112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345152 (or 1345150 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 20525112020 its reverse (2021152502), we get a palindrome (22546264522).

The spelling of 20525112020 in words is "twenty billion, five hundred twenty-five million, one hundred twelve thousand, twenty".