203533445225 has 24 divisors (see below), whose sum is σ = 282766479168. Its totient is φ = 144023659200.

The previous prime is 203533445207. The next prime is 203533445257. The reversal of 203533445225 is 522544335302.

It is not a de Polignac number, because 203533445225 - 2¹⁴ = 203533428841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9991469 + ... + 10011818.

It is an arithmetic number, because the mean of its divisors is an integer number (11781936632).

Almost surely, 2^203533445225 is an apocalyptic number.

203533445225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203533445225 is a deficient number, since it is larger than the sum of its proper divisors (79233033943).

203533445225 is a wasteful number, since it uses less digits than its factorization.

203533445225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20003345 (or 20003340 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 38.

The spelling of 203533445225 in words is "two hundred three billion, five hundred thirty-three million, four hundred forty-five thousand, two hundred twenty-five".