25663723 has 4 divisors (see below), whose sum is σ = 25899280. Its totient is φ = 25428168.

The previous prime is 25663721. The next prime is 25663741. The reversal of 25663723 is 32736652.

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 25663723 - 2¹ = 25663721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25663721) 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, 117615 + ... + 117832.

It is an arithmetic number, because the mean of its divisors is an integer number (6474820).

Almost surely, 2^25663723 is an apocalyptic number.

25663723 is a deficient number, since it is larger than the sum of its proper divisors (235557).

25663723 is a wasteful number, since it uses less digits than its factorization.

25663723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235556.

The product of its digits is 45360, while the sum is 34.

The square root of 25663723 is about 5065.9375242891. The cubic root of 25663723 is about 294.9668563741.

The spelling of 25663723 in words is "twenty-five million, six hundred sixty-three thousand, seven hundred twenty-three".