1505425551121 has 2 divisors, whose sum is σ = 1505425551122. Its totient is φ = 1505425551120.

The previous prime is 1505425551103. The next prime is 1505425551151. The reversal of 1505425551121 is 1211555245051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154593230400 + 350832320721 = 1074520^2 + 592311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1505425551121 - 2³⁹ = 955669737233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1505425551151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 752712775560 + 752712775561.

It is an arithmetic number, because the mean of its divisors is an integer number (752712775561).

Almost surely, 2^{1505425551121} is an apocalyptic number.

It is an amenable number.

1505425551121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1505425551121 is an equidigital number, since it uses as much as digits as its factorization.

1505425551121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50000, while the sum is 37.

The spelling of 1505425551121 in words is "one trillion, five hundred five billion, four hundred twenty-five million, five hundred fifty-one thousand, one hundred twenty-one".