1125320543225 has 6 divisors (see below), whose sum is σ = 1395397473630. Its totient is φ = 900256434560.

The previous prime is 1125320543219. The next prime is 1125320543239. The reversal of 1125320543225 is 5223450235211.

It can be written as a sum of positive squares in 3 ways, for example, as 565504 + 1125319977721 = 752^2 + 1060811^2 .

It is not a de Polignac number, because 1125320543225 - 2¹² = 1125320539129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22506410840 + ... + 22506410889.

It is an arithmetic number, because the mean of its divisors is an integer number (232566245605).

Almost surely, 2^{1125320543225} is an apocalyptic number.

It is an amenable number.

1125320543225 is a deficient number, since it is larger than the sum of its proper divisors (270076930405).

1125320543225 is an equidigital number, since it uses as much as digits as its factorization.

1125320543225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45012821739 (or 45012821734 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 1125320543225 its reverse (5223450235211), we get a palindrome (6348770778436).

The spelling of 1125320543225 in words is "one trillion, one hundred twenty-five billion, three hundred twenty million, five hundred forty-three thousand, two hundred twenty-five".