203146356225 has 24 divisors (see below), whose sum is σ = 336145683712. Its totient is φ = 108255355200.

The previous prime is 203146356223. The next prime is 203146356269. The reversal of 203146356225 is 522653641302.

203146356225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203146356225 - 2¹ = 203146356223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203146356223) 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 23 ways as a sum of consecutive naturals, for example, 1025521 + ... + 1207470.

Almost surely, 2^203146356225 is an apocalyptic number.

203146356225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203146356225 is a deficient number, since it is larger than the sum of its proper divisors (132999327487).

203146356225 is a wasteful number, since it uses less digits than its factorization.

203146356225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234217 (or 2234212 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 203146356225 its reverse (522653641302), we get a palindrome (725799997527).

The spelling of 203146356225 in words is "two hundred three billion, one hundred forty-six million, three hundred fifty-six thousand, two hundred twenty-five".