25664283 has 20 divisors (see below), whose sum is σ = 38918440. Its totient is φ = 16850592.

The previous prime is 25664281. The next prime is 25664321. The reversal of 25664283 is 38246652.

25664283 is a `hidden beast` number, since 2 + 5 + 6 + 642 + 8 + 3 = 666.

It is not a de Polignac number, because 25664283 - 2¹ = 25664281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25664281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3063 + ... + 7791.

It is an arithmetic number, because the mean of its divisors is an integer number (1945922).

Almost surely, 2^25664283 is an apocalyptic number.

25664283 is a deficient number, since it is larger than the sum of its proper divisors (13254157).

25664283 is an equidigital number, since it uses as much as digits as its factorization.

25664283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808 (or 4799 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 25664283 is about 5065.9927950995. The cubic root of 25664283 is about 294.9690018180.

The spelling of 25664283 in words is "twenty-five million, six hundred sixty-four thousand, two hundred eighty-three".