1225512124 has 12 divisors (see below), whose sum is σ = 2149053424. Its totient is φ = 611496864.

The previous prime is 1225512121. The next prime is 1225512139. The reversal of 1225512124 is 4212155221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225512121) 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, 312609 + ... + 316504.

Almost surely, 2^1225512124 is an apocalyptic number.

It is an amenable number.

1225512124 is a deficient number, since it is larger than the sum of its proper divisors (923541300).

1225512124 is a wasteful number, since it uses less digits than its factorization.

1225512124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629604 (or 629602 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 1225512124 is about 35007.3152926642. The cubic root of 1225512124 is about 1070.1365662590.

Adding to 1225512124 its reverse (4212155221), we get a palindrome (5437667345).

The spelling of 1225512124 in words is "one billion, two hundred twenty-five million, five hundred twelve thousand, one hundred twenty-four".