25226437 has 2 divisors, whose sum is σ = 25226438. Its totient is φ = 25226436.

The previous prime is 25226431. The next prime is 25226447. The reversal of 25226437 is 73462252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23338561 + 1887876 = 4831^2 + 1374^2 .

It is a cyclic number.

It is not a de Polignac number, because 25226437 - 2⁷ = 25226309 is a prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 25226399 and 25226408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25226431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12613218 + 12613219.

It is an arithmetic number, because the mean of its divisors is an integer number (12613219).

Almost surely, 2^25226437 is an apocalyptic number.

It is an amenable number.

25226437 is a deficient number, since it is larger than the sum of its proper divisors (1).

25226437 is an equidigital number, since it uses as much as digits as its factorization.

25226437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 25226437 is about 5022.5926571841. The cubic root of 25226437 is about 293.2819295543.

Adding to 25226437 its reverse (73462252), we get a palindrome (98688689).

The spelling of 25226437 in words is "twenty-five million, two hundred twenty-six thousand, four hundred thirty-seven".