25316287 has 4 divisors (see below), whose sum is σ = 25358200. Its totient is φ = 25274376.

The previous prime is 25316279. The next prime is 25316297. The reversal of 25316287 is 78261352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25316287 - 2³ = 25316279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25316237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20037 + ... + 21262.

It is an arithmetic number, because the mean of its divisors is an integer number (6339550).

Almost surely, 2^25316287 is an apocalyptic number.

25316287 is a deficient number, since it is larger than the sum of its proper divisors (41913).

25316287 is an equidigital number, since it uses as much as digits as its factorization.

25316287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41912.

The product of its digits is 20160, while the sum is 34.

The square root of 25316287 is about 5031.5292903848. The cubic root of 25316287 is about 293.6297149291.

The spelling of 25316287 in words is "twenty-five million, three hundred sixteen thousand, two hundred eighty-seven".