812025449 has 2 divisors, whose sum is σ = 812025450. Its totient is φ = 812025448.

The previous prime is 812025407. The next prime is 812025479. The reversal of 812025449 is 944520218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510760000 + 301265449 = 22600^2 + 17357^2 .

It is a cyclic number.

It is not a de Polignac number, because 812025449 - 2²⁸ = 543589993 is a prime.

It is a Chen prime.

It is equal to p_41732846 and since 812025449 and 41732846 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (812025479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406012724 + 406012725.

It is an arithmetic number, because the mean of its divisors is an integer number (406012725).

Almost surely, 2^812025449 is an apocalyptic number.

It is an amenable number.

812025449 is a deficient number, since it is larger than the sum of its proper divisors (1).

812025449 is an equidigital number, since it uses as much as digits as its factorization.

812025449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 812025449 is about 28496.0602364608. The cubic root of 812025449 is about 932.9460854240.

The spelling of 812025449 in words is "eight hundred twelve million, twenty-five thousand, four hundred forty-nine".