1225512144725 has 24 divisors (see below), whose sum is σ = 1657885058208. Its totient is φ = 891227067200.

The previous prime is 1225512144677. The next prime is 1225512144737. The reversal of 1225512144725 is 5274412155221.

It is not a de Polignac number, because 1225512144725 - 2²⁶ = 1225445035861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4678682 + ... + 4933668.

It is an arithmetic number, because the mean of its divisors is an integer number (69078544092).

Almost surely, 2^{1225512144725} is an apocalyptic number.

It is an amenable number.

1225512144725 is a deficient number, since it is larger than the sum of its proper divisors (432372913483).

1225512144725 is a wasteful number, since it uses less digits than its factorization.

1225512144725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272485 (or 272480 counting only the distinct ones).

The product of its digits is 224000, while the sum is 41.

Adding to 1225512144725 its reverse (5274412155221), we get a palindrome (6499924299946).

The spelling of 1225512144725 in words is "one trillion, two hundred twenty-five billion, five hundred twelve million, one hundred forty-four thousand, seven hundred twenty-five".