1125125632649 has 8 divisors (see below), whose sum is σ = 1149032527560. Its totient is φ = 1101469072000.

The previous prime is 1125125632637. The next prime is 1125125632651. The reversal of 1125125632649 is 9462365215211.

It can be written as a sum of positive squares in 4 ways, for example, as 130133347600 + 994992285049 = 360740^2 + 997493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125125632649 - 2²⁸ = 1124857197193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125125632049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62574482 + ... + 62592459.

It is an arithmetic number, because the mean of its divisors is an integer number (143629065945).

Almost surely, 2^{1125125632649} is an apocalyptic number.

It is an amenable number.

1125125632649 is a deficient number, since it is larger than the sum of its proper divisors (23906894911).

1125125632649 is a wasteful number, since it uses less digits than its factorization.

1125125632649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125167131.

The product of its digits is 777600, while the sum is 47.

The spelling of 1125125632649 in words is "one trillion, one hundred twenty-five billion, one hundred twenty-five million, six hundred thirty-two thousand, six hundred forty-nine".