125222202222521 has 4 divisors (see below), whose sum is σ = 125256425293200. Its totient is φ = 125187979151844.

The previous prime is 125222202222511. The next prime is 125222202222571.

125222202222521 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125222202222521 - 2⁴⁶ = 54853458044857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125222202222511) 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, 17111529851 + ... + 17111537168.

It is an arithmetic number, because the mean of its divisors is an integer number (31314106323300).

Almost surely, 2^{125222202222521} is an apocalyptic number.

It is an amenable number.

125222202222521 is a deficient number, since it is larger than the sum of its proper divisors (34223070679).

125222202222521 is an equidigital number, since it uses as much as digits as its factorization.

125222202222521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34223070678.

The product of its (nonzero) digits is 25600, while the sum is 32.

It can be divided in two parts, 12522220 and 2222521, that added together give a palindrome (14744741).

The spelling of 125222202222521 in words is "one hundred twenty-five trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-two thousand, five hundred twenty-one".