125222210125 has 16 divisors (see below), whose sum is σ = 158033257200. Its totient is φ = 99052166400.

The previous prime is 125222210111. The next prime is 125222210131. The reversal of 125222210125 is 521012222521.

It can be written as a sum of positive squares in 8 ways, for example, as 44121422601 + 81100787524 = 210051^2 + 284782^2 .

It is not a de Polignac number, because 125222210125 - 2⁷ = 125222209997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 125222210125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5616840 + ... + 5639089.

It is an arithmetic number, because the mean of its divisors is an integer number (9877078575).

Almost surely, 2^125222210125 is an apocalyptic number.

It is an amenable number.

125222210125 is a deficient number, since it is larger than the sum of its proper divisors (32811047075).

125222210125 is an equidigital number, since it uses as much as digits as its factorization.

125222210125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11256033 (or 11256023 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 125222210125 its reverse (521012222521), we get a palindrome (646234432646).

The spelling of 125222210125 in words is "one hundred twenty-five billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-five".