25319237 has 2 divisors, whose sum is σ = 25319238. Its totient is φ = 25319236.

The previous prime is 25319221. The next prime is 25319243. The reversal of 25319237 is 73291352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15888196 + 9431041 = 3986^2 + 3071^2 .

It is a cyclic number.

It is not a de Polignac number, because 25319237 - 2⁴ = 25319221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25319207) 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, 12659618 + 12659619.

It is an arithmetic number, because the mean of its divisors is an integer number (12659619).

Almost surely, 2^25319237 is an apocalyptic number.

It is an amenable number.

25319237 is a deficient number, since it is larger than the sum of its proper divisors (1).

25319237 is an equidigital number, since it uses as much as digits as its factorization.

25319237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 25319237 is about 5031.8224332741. The cubic root of 25319237 is about 293.6411196297.

The spelling of 25319237 in words is "twenty-five million, three hundred nineteen thousand, two hundred thirty-seven".