1225375271 has 4 divisors (see below), whose sum is σ = 1226197512. Its totient is φ = 1224553032.

The previous prime is 1225375267. The next prime is 1225375289. The reversal of 1225375271 is 1725735221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225375271 - 2² = 1225375267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225372271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408881 + ... + 411866.

It is an arithmetic number, because the mean of its divisors is an integer number (306549378).

Almost surely, 2^1225375271 is an apocalyptic number.

1225375271 is a deficient number, since it is larger than the sum of its proper divisors (822241).

1225375271 is an equidigital number, since it uses as much as digits as its factorization.

1225375271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822240.

The product of its digits is 29400, while the sum is 35.

The square root of 1225375271 is about 35005.3606037704. The cubic root of 1225375271 is about 1070.0967307083.

The spelling of 1225375271 in words is "one billion, two hundred twenty-five million, three hundred seventy-five thousand, two hundred seventy-one".