25478965 has 16 divisors (see below), whose sum is σ = 31824000. Its totient is φ = 19559232.

The previous prime is 25478953. The next prime is 25478969. The reversal of 25478965 is 56987452.

It is a cyclic number.

It is not a de Polignac number, because 25478965 - 2⁵ = 25478933 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28414 + ... + 29296.

It is an arithmetic number, because the mean of its divisors is an integer number (1989000).

Almost surely, 2^25478965 is an apocalyptic number.

It is an amenable number.

25478965 is a deficient number, since it is larger than the sum of its proper divisors (6345035).

25478965 is a wasteful number, since it uses less digits than its factorization.

25478965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116.

The product of its digits is 604800, while the sum is 46.

The square root of 25478965 is about 5047.6692641258. The cubic root of 25478965 is about 294.2573101757.

The spelling of 25478965 in words is "twenty-five million, four hundred seventy-eight thousand, nine hundred sixty-five".