203312988425 has 6 divisors (see below), whose sum is σ = 252108105678. Its totient is φ = 162650390720.

The previous prime is 203312988397. The next prime is 203312988443. The reversal of 203312988425 is 524889213302.

It can be written as a sum of positive squares in 3 ways, for example, as 15313567504 + 187999420921 = 123748^2 + 433589^2 .

It is not a de Polignac number, because 203312988425 - 2⁸ = 203312988169 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 203312988425.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4066259744 + ... + 4066259793.

It is an arithmetic number, because the mean of its divisors is an integer number (42018017613).

Almost surely, 2^203312988425 is an apocalyptic number.

203312988425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203312988425 is a deficient number, since it is larger than the sum of its proper divisors (48795117253).

203312988425 is an equidigital number, since it uses as much as digits as its factorization.

203312988425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8132519547 (or 8132519542 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 203312988425 in words is "two hundred three billion, three hundred twelve million, nine hundred eighty-eight thousand, four hundred twenty-five".