25423222 has 8 divisors (see below), whose sum is σ = 41601672. Its totient is φ = 11556000.

The previous prime is 25423207. The next prime is 25423243. The reversal of 25423222 is 22232452.

It is a happy number.

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

It is a super-2 number, since 2×25423222² = 1292680433722568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1155601 = 25423222 / (2 + 5 + 4 + 2 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 25423193 and 25423202.

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, 577779 + ... + 577822.

It is an arithmetic number, because the mean of its divisors is an integer number (5200209).

Almost surely, 2^25423222 is an apocalyptic number.

25423222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25423222 is a deficient number, since it is larger than the sum of its proper divisors (16178450).

25423222 is a wasteful number, since it uses less digits than its factorization.

25423222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155614.

The product of its digits is 1920, while the sum is 22.

The square root of 25423222 is about 5042.1445834089. The cubic root of 25423222 is about 294.0425609786.

Adding to 25423222 its reverse (22232452), we get a palindrome (47655674).

The spelling of 25423222 in words is "twenty-five million, four hundred twenty-three thousand, two hundred twenty-two".