25723459 has 4 divisors (see below), whose sum is σ = 26553280. Its totient is φ = 24893640.

The previous prime is 25723447. The next prime is 25723471. The reversal of 25723459 is 95432752.

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

It is an interprime number because it is at equal distance from previous prime (25723447) and next prime (25723471).

It is a cyclic number.

It is not a de Polignac number, because 25723459 - 2¹³ = 25715267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25723259) 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, 414864 + ... + 414925.

It is an arithmetic number, because the mean of its divisors is an integer number (6638320).

Almost surely, 2^25723459 is an apocalyptic number.

25723459 is a deficient number, since it is larger than the sum of its proper divisors (829821).

25723459 is an equidigital number, since it uses as much as digits as its factorization.

25723459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829820.

The product of its digits is 75600, while the sum is 37.

The square root of 25723459 is about 5071.8299458874. The cubic root of 25723459 is about 295.1955382720.

It can be divided in two parts, 257 and 23459, that added together give a square (23716 = 154²).

The spelling of 25723459 in words is "twenty-five million, seven hundred twenty-three thousand, four hundred fifty-nine".