1225144755425 has 12 divisors (see below), whose sum is σ = 1520107574076. Its totient is φ = 979517044800.

The previous prime is 1225144755389. The next prime is 1225144755449. The reversal of 1225144755425 is 5245574415221.

It can be written as a sum of positive squares in 6 ways, for example, as 155908101904 + 1069236653521 = 394852^2 + 1034039^2 .

It is not a de Polignac number, because 1225144755425 - 2⁶ = 1225144755361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225144755425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14927246 + ... + 15009095.

It is an arithmetic number, because the mean of its divisors is an integer number (126675631173).

Almost surely, 2^{1225144755425} is an apocalyptic number.

It is an amenable number.

1225144755425 is a deficient number, since it is larger than the sum of its proper divisors (294962818651).

1225144755425 is a wasteful number, since it uses less digits than its factorization.

1225144755425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29937988 (or 29937983 counting only the distinct ones).

The product of its digits is 2240000, while the sum is 47.

The spelling of 1225144755425 in words is "one trillion, two hundred twenty-five billion, one hundred forty-four million, seven hundred fifty-five thousand, four hundred twenty-five".