3125122225 has 24 divisors (see below), whose sum is σ = 3928311072. Its totient is φ = 2465904000.

The previous prime is 3125122193. The next prime is 3125122241. The reversal of 3125122225 is 5222215213.

It is not a de Polignac number, because 3125122225 - 2⁵ = 3125122193 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3125122225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2180109 + ... + 2181541.

It is an arithmetic number, because the mean of its divisors is an integer number (163679628).

Almost surely, 2^3125122225 is an apocalyptic number.

It is an amenable number.

3125122225 is a deficient number, since it is larger than the sum of its proper divisors (803188847).

3125122225 is a wasteful number, since it uses less digits than its factorization.

3125122225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577 (or 2572 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 3125122225 is about 55902.7926404397. The cubic root of 3125122225 is about 1462.0279295549.

Adding to 3125122225 its reverse (5222215213), we get a palindrome (8347337438).

The spelling of 3125122225 in words is "three billion, one hundred twenty-five million, one hundred twenty-two thousand, two hundred twenty-five".