1125577763525 has 12 divisors (see below), whose sum is σ = 1395832752132. Its totient is φ = 900387162240.

The previous prime is 1125577763521. The next prime is 1125577763551. The reversal of 1125577763525 is 5253677755211.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 535166865601 + 590410897924 = 731551^2 + 768382^2 .

It is not a de Polignac number, because 1125577763525 - 2² = 1125577763521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125577763521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1569272 + ... + 2171121.

It is an arithmetic number, because the mean of its divisors is an integer number (116319396011).

Almost surely, 2^{1125577763525} is an apocalyptic number.

It is an amenable number.

1125577763525 is a deficient number, since it is larger than the sum of its proper divisors (270254988607).

1125577763525 is a wasteful number, since it uses less digits than its factorization.

1125577763525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752440 (or 3752435 counting only the distinct ones).

The product of its digits is 15435000, while the sum is 56.

The spelling of 1125577763525 in words is "one trillion, one hundred twenty-five billion, five hundred seventy-seven million, seven hundred sixty-three thousand, five hundred twenty-five".