813425227 has 2 divisors, whose sum is σ = 813425228. Its totient is φ = 813425226.

The previous prime is 813425191. The next prime is 813425233. The reversal of 813425227 is 722524318.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 813425227 - 2²⁷ = 679207499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 813425192 and 813425201.

It is not a weakly prime, because it can be changed into another prime (813425237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406712613 + 406712614.

It is an arithmetic number, because the mean of its divisors is an integer number (406712614).

Almost surely, 2^813425227 is an apocalyptic number.

813425227 is a deficient number, since it is larger than the sum of its proper divisors (1).

813425227 is an equidigital number, since it uses as much as digits as its factorization.

813425227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 813425227 is about 28520.6105649932. The cubic root of 813425227 is about 933.4818517765.

Subtracting from 813425227 its reverse (722524318), we obtain a palindrome (90900909).

The spelling of 813425227 in words is "eight hundred thirteen million, four hundred twenty-five thousand, two hundred twenty-seven".