22212425 has 24 divisors (see below), whose sum is σ = 29343360. Its totient is φ = 16632000.

The previous prime is 22212419. The next prime is 22212431. The reversal of 22212425 is 52421222.

It is an interprime number because it is at equal distance from previous prime (22212419) and next prime (22212431).

It is not a de Polignac number, because 22212425 - 2⁴ = 22212409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22212397 and 22212406.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47744 + ... + 48206.

It is an arithmetic number, because the mean of its divisors is an integer number (1222640).

Almost surely, 2^22212425 is an apocalyptic number.

22212425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22212425 is a deficient number, since it is larger than the sum of its proper divisors (7130935).

22212425 is a wasteful number, since it uses less digits than its factorization.

22212425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 588 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 22212425 is about 4713.0059410105. The cubic root of 22212425 is about 281.1028992077.

Adding to 22212425 its reverse (52421222), we get a palindrome (74633647).

The spelling of 22212425 in words is "twenty-two million, two hundred twelve thousand, four hundred twenty-five".