25987459 has 4 divisors (see below), whose sum is σ = 27355240. Its totient is φ = 24619680.

The previous prime is 25987457. The next prime is 25987463. The reversal of 25987459 is 95478952.

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 25987459 - 2¹ = 25987457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25987457) 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, 683862 + ... + 683899.

It is an arithmetic number, because the mean of its divisors is an integer number (6838810).

Almost surely, 2^25987459 is an apocalyptic number.

25987459 is a deficient number, since it is larger than the sum of its proper divisors (1367781).

25987459 is a wasteful number, since it uses less digits than its factorization.

25987459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367780.

The product of its digits is 907200, while the sum is 49.

The square root of 25987459 is about 5097.7896190408. The cubic root of 25987459 is about 296.2019675609.

The spelling of 25987459 in words is "twenty-five million, nine hundred eighty-seven thousand, four hundred fifty-nine".