203454113125 has 20 divisors (see below), whose sum is σ = 257299412832. Its totient is φ = 160802246000.

The previous prime is 203454113089. The next prime is 203454113131. The reversal of 203454113125 is 521311454302.

It is a de Polignac number, because none of the positive numbers 2^k-203454113125 is a prime.

It is a super-2 number, since 2×203454113125² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1909129 + ... + 2012878.

Almost surely, 2^203454113125 is an apocalyptic number.

203454113125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203454113125 is a deficient number, since it is larger than the sum of its proper divisors (53845299707).

203454113125 is an frugal number, since it uses more digits than its factorization.

203454113125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922110 (or 3922095 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 203454113125 its reverse (521311454302), we get a palindrome (724765567427).

The spelling of 203454113125 in words is "two hundred three billion, four hundred fifty-four million, one hundred thirteen thousand, one hundred twenty-five".