1225386605 has 16 divisors (see below), whose sum is σ = 1582492464. Its totient is φ = 907514880.

The previous prime is 1225386563. The next prime is 1225386623. The reversal of 1225386605 is 5066835221.

It can be written as a sum of positive squares in 8 ways, for example, as 36929929 + 1188456676 = 6077^2 + 34474^2 .

It is not a de Polignac number, because 1225386605 - 2¹⁴ = 1225370221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112982 + ... + 123351.

It is an arithmetic number, because the mean of its divisors is an integer number (98905779).

Almost surely, 2^1225386605 is an apocalyptic number.

It is an amenable number.

1225386605 is a deficient number, since it is larger than the sum of its proper divisors (357105859).

1225386605 is a wasteful number, since it uses less digits than its factorization.

1225386605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236416.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1225386605 is about 35005.5224928867. The cubic root of 1225386605 is about 1070.1000299531.

The spelling of 1225386605 in words is "one billion, two hundred twenty-five million, three hundred eighty-six thousand, six hundred five".