25492287 has 4 divisors (see below), whose sum is σ = 33989720. Its totient is φ = 16994856.

The previous prime is 25492267. The next prime is 25492309. The reversal of 25492287 is 78229452.

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

It is not a de Polignac number, because 25492287 - 2⁸ = 25492031 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 (25492237) 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, 4248712 + ... + 4248717.

It is an arithmetic number, because the mean of its divisors is an integer number (8497430).

Almost surely, 2^25492287 is an apocalyptic number.

25492287 is a deficient number, since it is larger than the sum of its proper divisors (8497433).

25492287 is an equidigital number, since it uses as much as digits as its factorization.

25492287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8497432.

The product of its digits is 80640, while the sum is 39.

The square root of 25492287 is about 5048.9887106231. The cubic root of 25492287 is about 294.3085866288.

The spelling of 25492287 in words is "twenty-five million, four hundred ninety-two thousand, two hundred eighty-seven".