2505222 has 32 divisors (see below), whose sum is σ = 5896800. Its totient is φ = 785664.

The previous prime is 2505193. The next prime is 2505227. The reversal of 2505222 is 2225052.

It is a super-2 number, since 2×2505222² = 12552274538568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁵ + 5 + 0 + 5⁸ + 2¹⁰ + 2¹⁴ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 2505195 and 2505204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (184275).

2^2505222 is an apocalyptic number.

2505222 is an abundant number, since it is smaller than the sum of its proper divisors (3391578).

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

2505222 is a wasteful number, since it uses less digits than its factorization.

2505222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757 (or 2751 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2505222 is about 1582.7893100473. The cubic root of 2505222 is about 135.8153130355.

The spelling of 2505222 in words is "two million, five hundred five thousand, two hundred twenty-two".