203420105064025 has 6 divisors (see below), whose sum is σ = 252240930279422. Its totient is φ = 162736084051200.

The previous prime is 203420105063977. The next prime is 203420105064031. The reversal of 203420105064025 is 520460501024302.

203420105064025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 60982820809 + 203359122243216 = 246947^2 + 14260404^2 .

It is not a de Polignac number, because 203420105064025 - 2¹³ = 203420105055833 is a prime.

It is a Duffinian number.

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, 4068402101256 + ... + 4068402101305.

Almost surely, 2^{203420105064025} is an apocalyptic number.

203420105064025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203420105064025 is a deficient number, since it is larger than the sum of its proper divisors (48820825215397).

203420105064025 is an equidigital number, since it uses as much as digits as its factorization.

203420105064025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8136804202571 (or 8136804202566 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 203420105064025 its reverse (520460501024302), we get a palindrome (723880606088327).

The spelling of 203420105064025 in words is "two hundred three trillion, four hundred twenty billion, one hundred five million, sixty-four thousand, twenty-five".