25280222 has 32 divisors (see below), whose sum is σ = 43908480. Its totient is φ = 10795680.

The previous prime is 25280201. The next prime is 25280273. The reversal of 25280222 is 22208252.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82193 + ... + 82499.

It is an arithmetic number, because the mean of its divisors is an integer number (1372140).

Almost surely, 2^25280222 is an apocalyptic number.

25280222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25280222 is a deficient number, since it is larger than the sum of its proper divisors (18628258).

25280222 is a wasteful number, since it uses less digits than its factorization.

25280222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 25280222 is about 5027.9441126568. The cubic root of 25280222 is about 293.4902159537.

Adding to 25280222 its reverse (22208252), we get a palindrome (47488474).

The spelling of 25280222 in words is "twenty-five million, two hundred eighty thousand, two hundred twenty-two".