25001222 has 8 divisors (see below), whose sum is σ = 37535400. Its totient is φ = 12489424.

The previous prime is 25001201. The next prime is 25001231. The reversal of 25001222 is 22210052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25001222² = 1250122202986568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25001197 and 25001206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2447 + ... + 7482.

It is an arithmetic number, because the mean of its divisors is an integer number (4691925).

Almost surely, 2^25001222 is an apocalyptic number.

25001222 is a deficient number, since it is larger than the sum of its proper divisors (12534178).

25001222 is a wasteful number, since it uses less digits than its factorization.

25001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11190.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 25001222 is about 5000.1221985068. The cubic root of 25001222 is about 292.4065379432.

Adding to 25001222 its reverse (22210052), we get a palindrome (47211274).

The spelling of 25001222 in words is "twenty-five million, one thousand, two hundred twenty-two".