22425457 has 2 divisors, whose sum is σ = 22425458. Its totient is φ = 22425456.

The previous prime is 22425433. The next prime is 22425517. The reversal of 22425457 is 75452422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11771761 + 10653696 = 3431^2 + 3264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22425457 is a prime.

It is a super-3 number, since 3×22425457³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (22425427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11212728 + 11212729.

It is an arithmetic number, because the mean of its divisors is an integer number (11212729).

Almost surely, 2^22425457 is an apocalyptic number.

It is an amenable number.

22425457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22425457 is an equidigital number, since it uses as much as digits as its factorization.

22425457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22400, while the sum is 31.

The square root of 22425457 is about 4735.5524492925. The cubic root of 22425457 is about 281.9986964043.

Adding to 22425457 its reverse (75452422), we get a palindrome (97877879).

The spelling of 22425457 in words is "twenty-two million, four hundred twenty-five thousand, four hundred fifty-seven".