125165004553 has 2 divisors, whose sum is σ = 125165004554. Its totient is φ = 125165004552.

The previous prime is 125165004499. The next prime is 125165004617. The reversal of 125165004553 is 355400561521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99554763529 + 25610241024 = 315523^2 + 160032^2 .

It is a cyclic number.

It is not a de Polignac number, because 125165004553 - 2¹³ = 125164996361 is a prime.

It is not a weakly prime, because it can be changed into another prime (125105004553) 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 as a sum of consecutive naturals, namely, 62582502276 + 62582502277.

It is an arithmetic number, because the mean of its divisors is an integer number (62582502277).

Almost surely, 2^125165004553 is an apocalyptic number.

It is an amenable number.

125165004553 is a deficient number, since it is larger than the sum of its proper divisors (1).

125165004553 is an equidigital number, since it uses as much as digits as its factorization.

125165004553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 125165004553 in words is "one hundred twenty-five billion, one hundred sixty-five million, four thousand, five hundred fifty-three".