25527287 has 2 divisors, whose sum is σ = 25527288. Its totient is φ = 25527286.

The previous prime is 25527283. The next prime is 25527289. The reversal of 25527287 is 78272552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25527287 - 2² = 25527283 is a prime.

Together with 25527289, 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 25527287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25527283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763643 + 12763644.

It is an arithmetic number, because the mean of its divisors is an integer number (12763644).

Almost surely, 2^25527287 is an apocalyptic number.

25527287 is a deficient number, since it is larger than the sum of its proper divisors (1).

25527287 is an equidigital number, since it uses as much as digits as its factorization.

25527287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78400, while the sum is 38.

The square root of 25527287 is about 5052.4535623794. The cubic root of 25527287 is about 294.4432167611.

The spelling of 25527287 in words is "twenty-five million, five hundred twenty-seven thousand, two hundred eighty-seven".