812425135 has 4 divisors (see below), whose sum is σ = 974910168. Its totient is φ = 649940104.

The previous prime is 812425129. The next prime is 812425157. The reversal of 812425135 is 531524218.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 812425135 - 2⁷ = 812425007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 812425097 and 812425106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81242509 + ... + 81242518.

It is an arithmetic number, because the mean of its divisors is an integer number (243727542).

Almost surely, 2^812425135 is an apocalyptic number.

812425135 is a deficient number, since it is larger than the sum of its proper divisors (162485033).

812425135 is a wasteful number, since it uses less digits than its factorization.

812425135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162485032.

The product of its digits is 9600, while the sum is 31.

The square root of 812425135 is about 28503.0723782542. The cubic root of 812425135 is about 933.0991283807.

The spelling of 812425135 in words is "eight hundred twelve million, four hundred twenty-five thousand, one hundred thirty-five".