625054552120121 has 16 divisors (see below), whose sum is σ = 653490922549248. Its totient is φ = 597146416323600.

The previous prime is 625054552120093. The next prime is 625054552120153. The reversal of 625054552120121 is 121021255450526.

It is a cyclic number.

It is not a de Polignac number, because 625054552120121 - 2³⁰ = 625053478378297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625054552125121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89570645 + ... + 96296466.

It is an arithmetic number, because the mean of its divisors is an integer number (40843182659328).

Almost surely, 2^{625054552120121} is an apocalyptic number.

It is an amenable number.

625054552120121 is a deficient number, since it is larger than the sum of its proper divisors (28436370429127).

625054552120121 is a wasteful number, since it uses less digits than its factorization.

625054552120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185868532.

The product of its (nonzero) digits is 240000, while the sum is 41.

The spelling of 625054552120121 in words is "six hundred twenty-five trillion, fifty-four billion, five hundred fifty-two million, one hundred twenty thousand, one hundred twenty-one".