1225386603 has 16 divisors (see below), whose sum is σ = 2074728960. Its totient is φ = 700220808.

The previous prime is 1225386563. The next prime is 1225386623. The reversal of 1225386603 is 3066835221.

It is a happy number.

1225386603 is a `hidden beast` number, since 12 + 2 + 5 + 38 + 6 + 603 = 666.

It is not a de Polignac number, because 1225386603 - 2¹² = 1225382507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225386623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3241575 + ... + 3241952.

It is an arithmetic number, because the mean of its divisors is an integer number (129670560).

Almost surely, 2^1225386603 is an apocalyptic number.

1225386603 is a deficient number, since it is larger than the sum of its proper divisors (849342357).

1225386603 is an equidigital number, since it uses as much as digits as its factorization.

1225386603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483543 (or 6483537 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1225386603 is about 35005.5224643198. The cubic root of 1225386603 is about 1070.1000293709.

The spelling of 1225386603 in words is "one billion, two hundred twenty-five million, three hundred eighty-six thousand, six hundred three".