125522173 has 12 divisors (see below), whose sum is σ = 146494332. Its totient is φ = 107237760.

The previous prime is 125522149. The next prime is 125522183. The reversal of 125522173 is 371225521.

It can be written as a sum of positive squares in 2 ways, for example, as 21930489 + 103591684 = 4683^2 + 10178^2 .

It is not a de Polignac number, because 125522173 - 2²⁵ = 91967741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125522123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11493 + ... + 19573.

It is an arithmetic number, because the mean of its divisors is an integer number (12207861).

Almost surely, 2^125522173 is an apocalyptic number.

It is an amenable number.

125522173 is a deficient number, since it is larger than the sum of its proper divisors (20972159).

125522173 is an equidigital number, since it uses as much as digits as its factorization.

125522173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8412 (or 8405 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 125522173 is about 11203.6678369184. The cubic root of 125522173 is about 500.6952634361.

Adding to 125522173 its reverse (371225521), we get a palindrome (496747694).

The spelling of 125522173 in words is "one hundred twenty-five million, five hundred twenty-two thousand, one hundred seventy-three".