1225440232412 has 24 divisors (see below), whose sum is σ = 2340297628032. Its totient is φ = 556822854000.

The previous prime is 1225440232391. The next prime is 1225440232477. The reversal of 1225440232412 is 2142320445221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4758968 + ... + 5009855.

It is an arithmetic number, because the mean of its divisors is an integer number (97512401168).

Almost surely, 2^{1225440232412} is an apocalyptic number.

It is an amenable number.

1225440232412 is a deficient number, since it is larger than the sum of its proper divisors (1114857395620).

1225440232412 is a wasteful number, since it uses less digits than its factorization.

1225440232412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9771689 (or 9771687 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 1225440232412 its reverse (2142320445221), we get a palindrome (3367760677633).

The spelling of 1225440232412 in words is "one trillion, two hundred twenty-five billion, four hundred forty million, two hundred thirty-two thousand, four hundred twelve".