125120455405405 has 48 divisors (see below), whose sum is σ = 162265230484992. Its totient is φ = 92440807219200.

The previous prime is 125120455405331. The next prime is 125120455405417. The reversal of 125120455405405 is 504504554021521.

It is not a de Polignac number, because 125120455405405 - 2²⁹ = 125119918534493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46318557 + ... + 48945373.

It is an arithmetic number, because the mean of its divisors is an integer number (3380525635104).

Almost surely, 2^{125120455405405} is an apocalyptic number.

It is an amenable number.

125120455405405 is a deficient number, since it is larger than the sum of its proper divisors (37144775079587).

125120455405405 is a wasteful number, since it uses less digits than its factorization.

125120455405405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627338 (or 2627307 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 43.

The spelling of 125120455405405 in words is "one hundred twenty-five trillion, one hundred twenty billion, four hundred fifty-five million, four hundred five thousand, four hundred five".