25864747 has 4 divisors (see below), whose sum is σ = 26250856. Its totient is φ = 25478640.

The previous prime is 25864733. The next prime is 25864777. The reversal of 25864747 is 74746852.

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 25864747 - 2¹⁵ = 25831979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25864717) 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, 192954 + ... + 193087.

It is an arithmetic number, because the mean of its divisors is an integer number (6562714).

Almost surely, 2^25864747 is an apocalyptic number.

25864747 is a deficient number, since it is larger than the sum of its proper divisors (386109).

25864747 is an equidigital number, since it uses as much as digits as its factorization.

25864747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386108.

The product of its digits is 376320, while the sum is 43.

The square root of 25864747 is about 5085.7395725696. The cubic root of 25864747 is about 295.7350128777.

The spelling of 25864747 in words is "twenty-five million, eight hundred sixty-four thousand, seven hundred forty-seven".