125252222252521 has 16 divisors (see below), whose sum is σ = 154157371409664. Its totient is φ = 99100151394624.

The previous prime is 125252222252491. The next prime is 125252222252533.

125252222252521 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 125252222252521 - 2⁴¹ = 123053198996969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125252222252621) 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, 14846271 + ... + 21700603.

It is an arithmetic number, because the mean of its divisors is an integer number (9634835713104).

Almost surely, 2^{125252222252521} is an apocalyptic number.

It is an amenable number.

125252222252521 is a deficient number, since it is larger than the sum of its proper divisors (28905149157143).

125252222252521 is a wasteful number, since it uses less digits than its factorization.

125252222252521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055160.

The product of its digits is 320000, while the sum is 40.

The spelling of 125252222252521 in words is "one hundred twenty-five trillion, two hundred fifty-two billion, two hundred twenty-two million, two hundred fifty-two thousand, five hundred twenty-one".