203145105425 has 12 divisors (see below), whose sum is σ = 252557644800. Its totient is φ = 162091752720.

The previous prime is 203145105341. The next prime is 203145105437. The reversal of 203145105425 is 524501541302.

It is not a de Polignac number, because 203145105425 - 2¹⁴ = 203145089041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203145105391 and 203145105400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10598525 + ... + 10617674.

It is an arithmetic number, because the mean of its divisors is an integer number (21046470400).

Almost surely, 2^203145105425 is an apocalyptic number.

203145105425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203145105425 is a deficient number, since it is larger than the sum of its proper divisors (49412539375).

203145105425 is a wasteful number, since it uses less digits than its factorization.

203145105425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21216592 (or 21216587 counting only the distinct ones).

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

Adding to 203145105425 its reverse (524501541302), we get a palindrome (727646646727).

The spelling of 203145105425 in words is "two hundred three billion, one hundred forty-five million, one hundred five thousand, four hundred twenty-five".