25717423 has 4 divisors (see below), whose sum is σ = 26043040. Its totient is φ = 25391808.

The previous prime is 25717421. The next prime is 25717429. The reversal of 25717423 is 32471752.

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 25717423 - 2¹ = 25717421 is a prime.

It is a super-2 number, since 2×25717423² = 1322771691521858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25717421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162690 + ... + 162847.

It is an arithmetic number, because the mean of its divisors is an integer number (6510760).

Almost surely, 2^25717423 is an apocalyptic number.

25717423 is a deficient number, since it is larger than the sum of its proper divisors (325617).

25717423 is an equidigital number, since it uses as much as digits as its factorization.

25717423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325616.

The product of its digits is 11760, while the sum is 31.

The square root of 25717423 is about 5071.2348594795. The cubic root of 25717423 is about 295.1724472917.

The spelling of 25717423 in words is "twenty-five million, seven hundred seventeen thousand, four hundred twenty-three".