25435237 has 2 divisors, whose sum is σ = 25435238. Its totient is φ = 25435236.

The previous prime is 25435229. The next prime is 25435271. The reversal of 25435237 is 73253452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17589636 + 7845601 = 4194^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 25435237 - 2³ = 25435229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25435199 and 25435208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25432237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717618 + 12717619.

It is an arithmetic number, because the mean of its divisors is an integer number (12717619).

Almost surely, 2^25435237 is an apocalyptic number.

It is an amenable number.

25435237 is a deficient number, since it is larger than the sum of its proper divisors (1).

25435237 is an equidigital number, since it uses as much as digits as its factorization.

25435237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 31.

The square root of 25435237 is about 5043.3358999773. The cubic root of 25435237 is about 294.0888751314.

Adding to 25435237 its reverse (73253452), we get a palindrome (98688689).

The spelling of 25435237 in words is "twenty-five million, four hundred thirty-five thousand, two hundred thirty-seven".