813127625 has 16 divisors (see below), whose sum is σ = 1058908032. Its totient is φ = 622217200.

The previous prime is 813127603. The next prime is 813127631. The reversal of 813127625 is 526721318.

It is a happy number.

It is not a de Polignac number, because 813127625 - 2¹² = 813123529 is a prime.

It is a super-2 number, since 2×813127625² = 1322353069076281250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 138539 + ... + 144288.

It is an arithmetic number, because the mean of its divisors is an integer number (66181752).

Almost surely, 2^813127625 is an apocalyptic number.

It is an amenable number.

813127625 is a deficient number, since it is larger than the sum of its proper divisors (245780407).

813127625 is a wasteful number, since it uses less digits than its factorization.

813127625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282865 (or 282855 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 813127625 is about 28515.3927730270. The cubic root of 813127625 is about 933.3679958073.

The spelling of 813127625 in words is "eight hundred thirteen million, one hundred twenty-seven thousand, six hundred twenty-five".