1125350163521 has 2 divisors, whose sum is σ = 1125350163522. Its totient is φ = 1125350163520.

The previous prime is 1125350163461. The next prime is 1125350163523. The reversal of 1125350163521 is 1253610535211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582901710400 + 542448453121 = 763480^2 + 736511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125350163521 - 2²⁶ = 1125283054657 is a prime.

Together with 1125350163523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1125350163523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562675081760 + 562675081761.

It is an arithmetic number, because the mean of its divisors is an integer number (562675081761).

Almost surely, 2^{1125350163521} is an apocalyptic number.

It is an amenable number.

1125350163521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125350163521 is an equidigital number, since it uses as much as digits as its factorization.

1125350163521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

Adding to 1125350163521 its reverse (1253610535211), we get a palindrome (2378960698732).

The spelling of 1125350163521 in words is "one trillion, one hundred twenty-five billion, three hundred fifty million, one hundred sixty-three thousand, five hundred twenty-one".