26259487 has 4 divisors (see below), whose sum is σ = 26619280. Its totient is φ = 25899696.

The previous prime is 26259469. The next prime is 26259523. The reversal of 26259487 is 78495262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78495262 = 2 ⋅39247631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26259487 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 (26259437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179787 + ... + 179932.

It is an arithmetic number, because the mean of its divisors is an integer number (6654820).

Almost surely, 2^26259487 is an apocalyptic number.

26259487 is a deficient number, since it is larger than the sum of its proper divisors (359793).

26259487 is an equidigital number, since it uses as much as digits as its factorization.

26259487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359792.

The product of its digits is 241920, while the sum is 43.

The square root of 26259487 is about 5124.4011357426. The cubic root of 26259487 is about 297.2318964925.

The spelling of 26259487 in words is "twenty-six million, two hundred fifty-nine thousand, four hundred eighty-seven".