1225795471 has 2 divisors, whose sum is σ = 1225795472. Its totient is φ = 1225795470.

The previous prime is 1225795457. The next prime is 1225795517. The reversal of 1225795471 is 1745975221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225795471 - 2⁷ = 1225795343 is a prime.

It is a super-3 number, since 3×1225795471³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225790471) 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, 612897735 + 612897736.

It is an arithmetic number, because the mean of its divisors is an integer number (612897736).

Almost surely, 2^1225795471 is an apocalyptic number.

1225795471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225795471 is an equidigital number, since it uses as much as digits as its factorization.

1225795471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 43.

The square root of 1225795471 is about 35011.3620272048. The cubic root of 1225795471 is about 1070.2190342640.

The spelling of 1225795471 in words is "one billion, two hundred twenty-five million, seven hundred ninety-five thousand, four hundred seventy-one".