201540300125 has 8 divisors (see below), whose sum is σ = 251522294712. Its totient is φ = 161232240000.

The previous prime is 201540300061. The next prime is 201540300179. The reversal of 201540300125 is 521003045102.

It can be written as a sum of positive squares in 4 ways, for example, as 4000942009 + 197539358116 = 63253^2 + 444454^2 .

It is not a de Polignac number, because 201540300125 - 2⁶ = 201540300061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201540300125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806161076 + ... + 806161325.

It is an arithmetic number, because the mean of its divisors is an integer number (31440286839).

Almost surely, 2^201540300125 is an apocalyptic number.

201540300125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201540300125 is a deficient number, since it is larger than the sum of its proper divisors (49981994587).

201540300125 is an equidigital number, since it uses as much as digits as its factorization.

201540300125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612322416 (or 1612322406 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 201540300125 its reverse (521003045102), we get a palindrome (722543345227).

The spelling of 201540300125 in words is "two hundred one billion, five hundred forty million, three hundred thousand, one hundred twenty-five".