20002220125 has 16 divisors (see below), whose sum is σ = 24988114944. Its totient is φ = 15985530000.

The previous prime is 20002220123. The next prime is 20002220167. The reversal of 20002220125 is 52102220002.

It is not a de Polignac number, because 20002220125 - 2¹ = 20002220123 is a prime.

It is a super-3 number, since 3×20002220125³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002220099 and 20002220108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002220123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43140 + ... + 204610.

It is an arithmetic number, because the mean of its divisors is an integer number (1561757184).

Almost surely, 2^20002220125 is an apocalyptic number.

20002220125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20002220125 is a deficient number, since it is larger than the sum of its proper divisors (4985894819).

20002220125 is an equidigital number, since it uses as much as digits as its factorization.

20002220125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162477 (or 162467 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 20002220125 its reverse (52102220002), we get a palindrome (72104440127).

The spelling of 20002220125 in words is "twenty billion, two million, two hundred twenty thousand, one hundred twenty-five".