810254125 has 8 divisors (see below), whose sum is σ = 1011197304. Its totient is φ = 648203200.

The previous prime is 810254101. The next prime is 810254129. The reversal of 810254125 is 521452018.

It can be written as a sum of positive squares in 4 ways, for example, as 150945796 + 659308329 = 12286^2 + 25677^2 .

It is a de Polignac number, because none of the positive numbers 2^k-810254125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 810254093 and 810254102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810254129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3240892 + ... + 3241141.

It is an arithmetic number, because the mean of its divisors is an integer number (126399663).

Almost surely, 2^810254125 is an apocalyptic number.

It is an amenable number.

810254125 is a deficient number, since it is larger than the sum of its proper divisors (200943179).

810254125 is an equidigital number, since it uses as much as digits as its factorization.

810254125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482048 (or 6482038 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 810254125 is about 28464.9631125705. The cubic root of 810254125 is about 932.2672262179.

The spelling of 810254125 in words is "eight hundred ten million, two hundred fifty-four thousand, one hundred twenty-five".