25664023 has 8 divisors (see below), whose sum is σ = 31996800. Its totient is φ = 19997880.

The previous prime is 25664017. The next prime is 25664027. The reversal of 25664023 is 32046652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25664023 - 2¹³ = 25655831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25663982 and 25664000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25664027) 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 7 ways as a sum of consecutive naturals, for example, 166573 + ... + 166726.

It is an arithmetic number, because the mean of its divisors is an integer number (3999600).

Almost surely, 2^25664023 is an apocalyptic number.

25664023 is a deficient number, since it is larger than the sum of its proper divisors (6332777).

25664023 is a wasteful number, since it uses less digits than its factorization.

25664023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333317.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 25664023 is about 5065.9671337268. The cubic root of 25664023 is about 294.9680057229.

The spelling of 25664023 in words is "twenty-five million, six hundred sixty-four thousand, twenty-three".