25664311 has 8 divisors (see below), whose sum is σ = 26552448. Its totient is φ = 24780000.

The previous prime is 25664281. The next prime is 25664321. The reversal of 25664311 is 11346652.

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

It is a cyclic number.

It is not a de Polignac number, because 25664311 - 2⁷ = 25664183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25664311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25664321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21141 + ... + 22321.

It is an arithmetic number, because the mean of its divisors is an integer number (3319056).

Almost surely, 2^25664311 is an apocalyptic number.

25664311 is a deficient number, since it is larger than the sum of its proper divisors (888137).

25664311 is a wasteful number, since it uses less digits than its factorization.

25664311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913.

The product of its digits is 4320, while the sum is 28.

The square root of 25664311 is about 5065.9955586242. The cubic root of 25664311 is about 294.9691090894.

The spelling of 25664311 in words is "twenty-five million, six hundred sixty-four thousand, three hundred eleven".