806825815469 has 2 divisors, whose sum is σ = 806825815470. Its totient is φ = 806825815468.

The previous prime is 806825815427. The next prime is 806825815483. The reversal of 806825815469 is 964518528608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 653583318025 + 153242497444 = 808445^2 + 391462^2 .

It is a cyclic number.

It is not a de Polignac number, because 806825815469 - 2³² = 802530848173 is a prime.

It is a super-2 number, since 2×806825815469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806825815069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403412907734 + 403412907735.

It is an arithmetic number, because the mean of its divisors is an integer number (403412907735).

Almost surely, 2^806825815469 is an apocalyptic number.

It is an amenable number.

806825815469 is a deficient number, since it is larger than the sum of its proper divisors (1).

806825815469 is an equidigital number, since it uses as much as digits as its factorization.

806825815469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33177600, while the sum is 62.

The spelling of 806825815469 in words is "eight hundred six billion, eight hundred twenty-five million, eight hundred fifteen thousand, four hundred sixty-nine".