203415340425 has 48 divisors (see below), whose sum is σ = 378722426880. Its totient is φ = 95444136000.

The previous prime is 203415340421. The next prime is 203415340439. The reversal of 203415340425 is 524043514302.

It is not a de Polignac number, because 203415340425 - 2² = 203415340421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (203415340421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3951265 + ... + 4002414.

It is an arithmetic number, because the mean of its divisors is an integer number (7890050560).

Almost surely, 2^203415340425 is an apocalyptic number.

203415340425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203415340425 is a deficient number, since it is larger than the sum of its proper divisors (175307086455).

203415340425 is a wasteful number, since it uses less digits than its factorization.

203415340425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953734 (or 7953729 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 203415340425 its reverse (524043514302), we get a palindrome (727458854727).

The spelling of 203415340425 in words is "two hundred three billion, four hundred fifteen million, three hundred forty thousand, four hundred twenty-five".