1121603712725 has 12 divisors (see below), whose sum is σ = 1390823005440. Its totient is φ = 897260775600.

The previous prime is 1121603712683. The next prime is 1121603712727. The reversal of 1121603712725 is 5272173061211.

It is not a de Polignac number, because 1121603712725 - 2²² = 1121599518421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121603712727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516620 + ... + 1584330.

It is an arithmetic number, because the mean of its divisors is an integer number (115901917120).

Almost surely, 2^{1121603712725} is an apocalyptic number.

It is an amenable number.

1121603712725 is a deficient number, since it is larger than the sum of its proper divisors (269219292715).

1121603712725 is a wasteful number, since it uses less digits than its factorization.

1121603712725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109740 (or 1109735 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

Adding to 1121603712725 its reverse (5272173061211), we get a palindrome (6393776773936).

The spelling of 1121603712725 in words is "one trillion, one hundred twenty-one billion, six hundred three million, seven hundred twelve thousand, seven hundred twenty-five".