1225431603 has 24 divisors (see below), whose sum is σ = 1967425200. Its totient is φ = 728669760.

The previous prime is 1225431589. The next prime is 1225431617. The reversal of 1225431603 is 3061345221.

1225431603 is a `hidden beast` number, since 1 + 2 + 2 + 54 + 3 + 1 + 603 = 666.

It is an interprime number because it is at equal distance from previous prime (1225431589) and next prime (1225431617).

It is not a de Polignac number, because 1225431603 - 2⁹ = 1225431091 is a prime.

It is a super-2 number, since 2×1225431603² = 3003365227262299218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225431653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111528 + ... + 122021.

It is an arithmetic number, because the mean of its divisors is an integer number (81976050).

Almost surely, 2^1225431603 is an apocalyptic number.

1225431603 is a deficient number, since it is larger than the sum of its proper divisors (741993597).

1225431603 is a wasteful number, since it uses less digits than its factorization.

1225431603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233619 (or 233616 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1225431603 is about 35006.1652141448. The cubic root of 1225431603 is about 1070.1131283422.

Adding to 1225431603 its reverse (3061345221), we get a palindrome (4286776824).

The spelling of 1225431603 in words is "one billion, two hundred twenty-five million, four hundred thirty-one thousand, six hundred three".