25478964 has 36 divisors (see below), whose sum is σ = 73606624. Its totient is φ = 7279632.

The previous prime is 25478953. The next prime is 25478969. The reversal of 25478964 is 46987452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50302 + ... + 50805.

Almost surely, 2^25478964 is an apocalyptic number.

It is an amenable number.

25478964 is an abundant number, since it is smaller than the sum of its proper divisors (48127660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25478964 is a wasteful number, since it uses less digits than its factorization.

25478964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101124 (or 101119 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 25478964 is about 5047.6691650702. The cubic root of 25478964 is about 294.2573063260.

It can be divided in two parts, 2547 and 8964, that added together give a palindrome (11511).

The spelling of 25478964 in words is "twenty-five million, four hundred seventy-eight thousand, nine hundred sixty-four".