1225613168 has 20 divisors (see below), whose sum is σ = 2557289448. Its totient is φ = 565667520.

The previous prime is 1225613141. The next prime is 1225613177. The reversal of 1225613168 is 8613165221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2945978 + ... + 2946393.

Almost surely, 2^1225613168 is an apocalyptic number.

It is an amenable number.

1225613168 is an abundant number, since it is smaller than the sum of its proper divisors (1331676280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225613168 is a wasteful number, since it uses less digits than its factorization.

1225613168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892392 (or 5892386 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 1225613168 is about 35008.7584469944. The cubic root of 1225613168 is about 1070.1659765236.

Adding to 1225613168 its reverse (8613165221), we get a palindrome (9838778389).

The spelling of 1225613168 in words is "one billion, two hundred twenty-five million, six hundred thirteen thousand, one hundred sixty-eight".