2212249725 has 120 divisors (see below), whose sum is σ = 4710055680. Its totient is φ = 1005540480.

The previous prime is 2212249709. The next prime is 2212249727. The reversal of 2212249725 is 5279422122.

It is a happy number.

2212249725 is a `hidden beast` number, since 22 + 122 + 497 + 25 = 666.

It is not a de Polignac number, because 2212249725 - 2⁴ = 2212249709 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212249725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212249727) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3387499 + ... + 3388151.

It is an arithmetic number, because the mean of its divisors is an integer number (39250464).

Almost surely, 2^2212249725 is an apocalyptic number.

2212249725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2212249725 is an abundant number, since it is smaller than the sum of its proper divisors (2497805955).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2212249725 is a wasteful number, since it uses less digits than its factorization.

2212249725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 907 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 2212249725 is about 47034.5588370934. The cubic root of 2212249725 is about 1303.0009027315. Note that the first 3 decimals are identical.

The spelling of 2212249725 in words is "two billion, two hundred twelve million, two hundred forty-nine thousand, seven hundred twenty-five".