25289237 has 2 divisors, whose sum is σ = 25289238. Its totient is φ = 25289236.

The previous prime is 25289227. The next prime is 25289239. The reversal of 25289237 is 73298252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25260676 + 28561 = 5026^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 25289237 - 2¹⁰ = 25288213 is a prime.

Together with 25289239, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25289237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25289239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12644618 + 12644619.

It is an arithmetic number, because the mean of its divisors is an integer number (12644619).

Almost surely, 2^25289237 is an apocalyptic number.

It is an amenable number.

25289237 is a deficient number, since it is larger than the sum of its proper divisors (1).

25289237 is an equidigital number, since it uses as much as digits as its factorization.

25289237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 25289237 is about 5028.8405224266. The cubic root of 25289237 is about 293.5250982932.

The spelling of 25289237 in words is "twenty-five million, two hundred eighty-nine thousand, two hundred thirty-seven".