125215225 has 12 divisors (see below), whose sum is σ = 163439440. Its totient is φ = 94899600.

The previous prime is 125215219. The next prime is 125215247. The reversal of 125215225 is 522512521.

It is a de Polignac number, because none of the positive numbers 2^k-125215225 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 125215225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131331 + ... + 132280.

Almost surely, 2^125215225 is an apocalyptic number.

It is an amenable number.

125215225 is a deficient number, since it is larger than the sum of its proper divisors (38224215).

125215225 is a wasteful number, since it uses less digits than its factorization.

125215225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263640 (or 263635 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 125215225 is about 11189.9609025233. The cubic root of 125215225 is about 500.2868021243.

Adding to 125215225 its reverse (522512521), we get a palindrome (647727746).

The spelling of 125215225 in words is "one hundred twenty-five million, two hundred fifteen thousand, two hundred twenty-five".