203125045541 has 4 divisors (see below), whose sum is σ = 221590958784. Its totient is φ = 184659132300.

The previous prime is 203125045517. The next prime is 203125045559. The reversal of 203125045541 is 145540521302.

203125045541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203125045541 - 2¹⁸ = 203124783397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203125045498 and 203125045507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203125045741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9232956605 + ... + 9232956626.

It is an arithmetic number, because the mean of its divisors is an integer number (55397739696).

Almost surely, 2^203125045541 is an apocalyptic number.

It is an amenable number.

203125045541 is a deficient number, since it is larger than the sum of its proper divisors (18465913243).

203125045541 is a wasteful number, since it uses less digits than its factorization.

203125045541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18465913242.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 203125045541 its reverse (145540521302), we get a palindrome (348665566843).

The spelling of 203125045541 in words is "two hundred three billion, one hundred twenty-five million, forty-five thousand, five hundred forty-one".