1225168671 has 4 divisors (see below), whose sum is σ = 1633558232. Its totient is φ = 816779112.

The previous prime is 1225168661. The next prime is 1225168673. The reversal of 1225168671 is 1768615221.

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

It is not a de Polignac number, because 1225168671 - 2²⁷ = 1090950943 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 (1225168673) 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, 204194776 + ... + 204194781.

It is an arithmetic number, because the mean of its divisors is an integer number (408389558).

Almost surely, 2^1225168671 is an apocalyptic number.

1225168671 is a deficient number, since it is larger than the sum of its proper divisors (408389561).

1225168671 is an equidigital number, since it uses as much as digits as its factorization.

1225168671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408389560.

The product of its digits is 40320, while the sum is 39.

The square root of 1225168671 is about 35002.4095027757. The cubic root of 1225168671 is about 1070.0365873884.

The spelling of 1225168671 in words is "one billion, two hundred twenty-five million, one hundred sixty-eight thousand, six hundred seventy-one".