203478425825 has 6 divisors (see below), whose sum is σ = 252313248054. Its totient is φ = 162782740640.

The previous prime is 203478425723. The next prime is 203478425837. The reversal of 203478425825 is 528524874302.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 37066645729 + 166411780096 = 192527^2 + 407936^2 .

It is not a de Polignac number, because 203478425825 - 2⁸ = 203478425569 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, 4069568492 + ... + 4069568541.

It is an arithmetic number, because the mean of its divisors is an integer number (42052208009).

Almost surely, 2^203478425825 is an apocalyptic number.

203478425825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203478425825 is a deficient number, since it is larger than the sum of its proper divisors (48834822229).

203478425825 is an equidigital number, since it uses as much as digits as its factorization.

203478425825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8139137043 (or 8139137038 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 50.

The spelling of 203478425825 in words is "two hundred three billion, four hundred seventy-eight million, four hundred twenty-five thousand, eight hundred twenty-five".