812895253 has 2 divisors, whose sum is σ = 812895254. Its totient is φ = 812895252.

The previous prime is 812895247. The next prime is 812895311. The reversal of 812895253 is 352598218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604323889 + 208571364 = 24583^2 + 14442^2 .

It is a cyclic number.

It is not a de Polignac number, because 812895253 - 2¹⁷ = 812764181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812898253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406447626 + 406447627.

It is an arithmetic number, because the mean of its divisors is an integer number (406447627).

Almost surely, 2^812895253 is an apocalyptic number.

It is an amenable number.

812895253 is a deficient number, since it is larger than the sum of its proper divisors (1).

812895253 is an equidigital number, since it uses as much as digits as its factorization.

812895253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 43.

The square root of 812895253 is about 28511.3179807599. The cubic root of 812895253 is about 933.2790760835.

The spelling of 812895253 in words is "eight hundred twelve million, eight hundred ninety-five thousand, two hundred fifty-three".