625402166133121 has 32 divisors (see below), whose sum is σ = 747029302403328. Its totient is φ = 517690293288960.

The previous prime is 625402166133113. The next prime is 625402166133163. The reversal of 625402166133121 is 121331661204526.

It is a cyclic number.

It is not a de Polignac number, because 625402166133121 - 2³ = 625402166133113 is a prime.

It is a super-2 number, since 2×625402166133121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625402166137121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238067215 + ... + 240679876.

It is an arithmetic number, because the mean of its divisors is an integer number (23344665700104).

Almost surely, 2^{625402166133121} is an apocalyptic number.

It is an amenable number.

625402166133121 is a deficient number, since it is larger than the sum of its proper divisors (121627136270207).

625402166133121 is a wasteful number, since it uses less digits than its factorization.

625402166133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478747401.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 625402166133121 in words is "six hundred twenty-five trillion, four hundred two billion, one hundred sixty-six million, one hundred thirty-three thousand, one hundred twenty-one".