25064447 has 4 divisors (see below), whose sum is σ = 25346160. Its totient is φ = 24782736.

The previous prime is 25064419. The next prime is 25064449. The reversal of 25064447 is 74446052.

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 25064447 - 2⁶ = 25064383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25064449) 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, 140723 + ... + 140900.

It is an arithmetic number, because the mean of its divisors is an integer number (6336540).

Almost surely, 2^25064447 is an apocalyptic number.

25064447 is a deficient number, since it is larger than the sum of its proper divisors (281713).

25064447 is an equidigital number, since it uses as much as digits as its factorization.

25064447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281712.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 25064447 is about 5006.4405519291. The cubic root of 25064447 is about 292.6528171198.

The spelling of 25064447 in words is "twenty-five million, sixty-four thousand, four hundred forty-seven".