25525237 has 2 divisors, whose sum is σ = 25525238. Its totient is φ = 25525236.

The previous prime is 25525223. The next prime is 25525243. The reversal of 25525237 is 73252552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20711601 + 4813636 = 4551^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 25525237 - 2¹⁹ = 25000949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25525199 and 25525208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25555237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762618 + 12762619.

It is an arithmetic number, because the mean of its divisors is an integer number (12762619).

Almost surely, 2^25525237 is an apocalyptic number.

It is an amenable number.

25525237 is a deficient number, since it is larger than the sum of its proper divisors (1).

25525237 is an equidigital number, since it uses as much as digits as its factorization.

25525237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 31.

The square root of 25525237 is about 5052.2506865752. The cubic root of 25525237 is about 294.4353346759.

Adding to 25525237 its reverse (73252552), we get a palindrome (98777789).

The spelling of 25525237 in words is "twenty-five million, five hundred twenty-five thousand, two hundred thirty-seven".