25042222 has 8 divisors (see below), whose sum is σ = 37850472. Its totient is φ = 12425400.

The previous prime is 25042189. The next prime is 25042223. The reversal of 25042222 is 22224052.

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

It is a super-2 number, since 2×25042222² = 1254225765394568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25042222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47529 + ... + 48052.

It is an arithmetic number, because the mean of its divisors is an integer number (4731309).

Almost surely, 2^25042222 is an apocalyptic number.

25042222 is a deficient number, since it is larger than the sum of its proper divisors (12808250).

25042222 is a wasteful number, since it uses less digits than its factorization.

25042222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95714.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 25042222 is about 5004.2204188065. The cubic root of 25042222 is about 292.5662917416.

Adding to 25042222 its reverse (22224052), we get a palindrome (47266274).

The spelling of 25042222 in words is "twenty-five million, forty-two thousand, two hundred twenty-two".