125213225 has 6 divisors (see below), whose sum is σ = 155264430. Its totient is φ = 100170560.

The previous prime is 125213203. The next prime is 125213233. The reversal of 125213225 is 522312521.

It can be written as a sum of positive squares in 3 ways, for example, as 310249 + 124902976 = 557^2 + 11176^2 .

It is not a de Polignac number, because 125213225 - 2⁶ = 125213161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125213225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2504240 + ... + 2504289.

It is an arithmetic number, because the mean of its divisors is an integer number (25877405).

Almost surely, 2^125213225 is an apocalyptic number.

It is an amenable number.

125213225 is a deficient number, since it is larger than the sum of its proper divisors (30051205).

125213225 is an equidigital number, since it uses as much as digits as its factorization.

125213225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008539 (or 5008534 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 125213225 is about 11189.8715363493. The cubic root of 125213225 is about 500.2841385000.

Adding to 125213225 its reverse (522312521), we get a palindrome (647525746).

The spelling of 125213225 in words is "one hundred twenty-five million, two hundred thirteen thousand, two hundred twenty-five".