22425397 has 8 divisors (see below), whose sum is σ = 23786136. Its totient is φ = 21069312.

The previous prime is 22425383. The next prime is 22425427. The reversal of 22425397 is 79352422.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14182756 + 8242641 = 3766^2 + 2871^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22425397 - 2¹⁹ = 21901109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22425797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16923 + ... + 18199.

It is an arithmetic number, because the mean of its divisors is an integer number (2973267).

Almost surely, 2^22425397 is an apocalyptic number.

It is an amenable number.

22425397 is a deficient number, since it is larger than the sum of its proper divisors (1360739).

22425397 is a wasteful number, since it uses less digits than its factorization.

22425397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327.

The product of its digits is 30240, while the sum is 34.

The square root of 22425397 is about 4735.5461142301. The cubic root of 22425397 is about 281.9984449053.

Subtracting 22425397 from its reverse (79352422), we obtain a square (56927025 = 7545²).

It can be divided in two parts, 22425 and 397, that added together give a palindrome (22822).

The spelling of 22425397 in words is "twenty-two million, four hundred twenty-five thousand, three hundred ninety-seven".