125582202285521 has 4 divisors (see below), whose sum is σ = 125585407505844. Its totient is φ = 125578997065200.

The previous prime is 125582202285479. The next prime is 125582202285557.

125582202285521 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114756884951296 + 10825317334225 = 10712464^2 + 3290185^2 .

It is a cyclic number.

It is not a de Polignac number, because 125582202285521 - 2³⁰ = 125581128543697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125582202285521.

It is not an unprimeable number, because it can be changed into a prime (125582202281521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602551390 + ... + 1602629751.

It is an arithmetic number, because the mean of its divisors is an integer number (31396351876461).

Almost surely, 2^{125582202285521} is an apocalyptic number.

It is an amenable number.

125582202285521 is a deficient number, since it is larger than the sum of its proper divisors (3205220323).

125582202285521 is an equidigital number, since it uses as much as digits as its factorization.

125582202285521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205220322.

The product of its (nonzero) digits is 2560000, while the sum is 50.

The spelling of 125582202285521 in words is "one hundred twenty-five trillion, five hundred eighty-two billion, two hundred two million, two hundred eighty-five thousand, five hundred twenty-one".