20203541125 has 8 divisors (see below), whose sum is σ = 25214019480. Its totient is φ = 16162832800.

The previous prime is 20203541089. The next prime is 20203541129. The reversal of 20203541125 is 52114530202.

It can be written as a sum of positive squares in 4 ways, for example, as 257345764 + 19946195361 = 16042^2 + 141231^2 .

It is not a de Polignac number, because 20203541125 - 2⁹ = 20203540613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 20203541125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203541129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80814040 + ... + 80814289.

It is an arithmetic number, because the mean of its divisors is an integer number (3151752435).

Almost surely, 2^20203541125 is an apocalyptic number.

20203541125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20203541125 is a deficient number, since it is larger than the sum of its proper divisors (5010478355).

20203541125 is an equidigital number, since it uses as much as digits as its factorization.

20203541125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161628344 (or 161628334 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 20203541125 in words is "twenty billion, two hundred three million, five hundred forty-one thousand, one hundred twenty-five".